Mallard - wikipedia Mallard For other uses, see Mallard ( disambiguation ). `` Wild Duck '' redirects here. For the play by Henrik Ibsen, see The Wild Duck. Mallard Female ( left ) and male ( right ) Female call Conservation status Least Concern ( IUCN 3.1 ) Scientific classification Kingdom : Animalia Phylum : Chordata Class : Aves Order : Anseriformes Family : Anatidae Genus : Anas Species : A. platyrhynchos Binomial name Anas platyrhynchos Linnaeus, 1758 Subspecies A. p. platyrhynchos Linnaeus, 1758 A. p. domesticus Linnaeus, 1758 A. p. conboschas C.L. Brehm, 1831 ( disputed ) Synonyms Anas boschas Linnaeus, 1758 The mallard ( / ˈmælɑːrd / or / ˈmælərd / ) ( Anas platyrhynchos ) is a dabbling duck that breeds throughout the temperate and subtropical Americas, Eurasia, and North Africa and has been introduced to New Zealand, Australia, Peru, Brazil, Uruguay, Argentina, Chile, the Falkland Islands, and South Africa. This duck belongs to the subfamily Anatinae of the waterfowl family Anatidae. The male birds ( drakes ) have a glossy green head and are grey on wings and belly while the females ( hens or ducks ) have mainly brown - speckled plumage. Both sexes have an area of white - bordered black speculum feathers that commonly also include iridescent blue feathers, especially among males. It is 50 -- 65 cm ( 20 -- 26 in ) long, of which the body makes up around two - thirds the length. The wingspan is 81 -- 98 cm ( 32 -- 39 in ) and the bill is 4.4 to 6.1 cm ( 1.7 to 2.4 in ) long. It is often slightly heavier than most other dabbling ducks, weighing 0.72 -- 1.58 kg ( 1.6 -- 3.5 lb ). Mallards live in wetlands, eat water plants and small animals, and are social animals preferring to congregate in groups or flocks of varying sizes. This species is the main ancestor of most breeds of domesticated ducks. The female lays eight to thirteen creamy white to greenish - buff spotless eggs, on alternate days. Incubation takes 27 to 28 days and fledging takes 50 to 60 days. The ducklings are precocial and fully capable of swimming as soon as they hatch. The mallard is considered to be a species of least concern by the International Union for Conservation of Nature ( IUCN ). Unlike many waterfowl, mallards are considered an invasive species in some regions. It is a very adaptable species, being able to live and even thrive in urban areas which may have supported more localised, sensitive species of waterfowl before development. The non-migratory mallard interbreeds with indigenous wild ducks of closely related species through genetic pollution by producing fertile offspring. Complete hybridisation of various species of wild duck gene pools could result in the extinction of many indigenous waterfowl. The wild mallard is the ancestor of most domestic ducks, and its naturally evolved wild gene pool gets genetically polluted by the domesticated and feral mallard populations. Contents 1 Taxonomy and evolution 2 Description 3 Distribution and habitat 4 Behaviour 4.1 Feeding 4.2 Breeding 5 Predators and threats 6 Status and conservation 6.1 Invasiveness 7 Relationship with humans 7.1 Domestication 7.2 Hunting 7.3 As food 8 References 9 External links Taxonomy and Evolution. An American black duck ( top left ) and a male mallard ( bottom right ) in eclipse plumage The mallard was one of the many bird species originally described in the 1758 10th edition of Systema Naturae by Carl Linnaeus. He gave it two binomial names : Anas platyrhynchos and Anas boschas. The latter was generally preferred until 1906 when Einar Lönnberg established that A. platyrhynchos had priority as it appeared on an earlier page in the text. The scientific name comes from Latin Anas, `` duck '' and Ancient Greek platyrhynchus, `` broad - billed '' ( from platus, `` broad '' and rhunkhos, `` bill '' ). The genome of Anas platyrhynchos was sequenced in 2013. The name Mallard originally referred to any wild drake, and it is sometimes still used this way. It was derived from the Old French malart or mallart for `` wild drake '' although its true derivation is unclear. It may be related to, or at least influenced by, an Old High German masculine proper name Madelhart, clues lying in the alternate English forms `` maudelard '' or `` mawdelard ''. Masle ( male ) has also been proposed as an influence. Mallards frequently interbreed with their closest relatives in the genus Anas, such as the American black duck, and also with species more distantly related, such as the northern pintail, leading to various hybrids that may be fully fertile. This is quite unusual among such different species, and is apparently because the mallard evolved very rapidly and recently, during the Late Pleistocene. The distinct lineages of this radiation are usually kept separate due to non-overlapping ranges and behavioural cues, but have not yet reached the point where they are fully genetically incompatible. Mallards and their domesticated conspecifics are also fully inter-fertile. Genetic analysis has shown that certain mallards appear to be closer to their Indo - Pacific relatives while others are related to their American relatives. Mitochondrial DNA data for the D - loop sequence suggests that mallards may have evolved in the general area of Siberia. Mallard bones rather abruptly appear in food remains of ancient humans and other deposits of fossil bones in Europe, without a good candidate for a local predecessor species. The large ice age palaeosubspecies that made up at least the European and west Asian populations during the Pleistocene has been named Anas platyrhynchos palaeoboschas. Mallards are differentiated in their mitochondrial DNA between North American and Eurasian populations, but the nuclear genome displays a notable lack of genetic structure. Haplotypes typical of American mallard relatives and spotbills can be found in mallards around the Bering Sea. The Aleutian Islands hold a population of mallards that appear to be evolving towards a subspecies, as gene flow with other populations is very limited. Also, the paucity of morphological differences between the Old World mallards and the New World mallard demonstrates the extent to which the genome is shared among them such that birds like the Chinese spot - billed duck are highly similar to the Old World mallard, and birds such as the Hawaiian duck are highly similar to the New World mallard. The size of the mallard varies clinally ; for example, birds from Greenland, though larger, have smaller bills, paler plumage, and stockier bodies than birds further south, and are sometimes classified as a separate subspecies, the Greenland mallard ( A. p. conboschas ). Description Juvenile Iridescent speculum feathers of the male A group of mallards quacking The mallard is a medium - sized waterfowl species that is often slightly heavier than most other dabbling ducks. It is 50 -- 65 cm ( 20 -- 26 in ) long -- of which the body makes up around two - thirds -- has a wingspan of 81 -- 98 cm ( 32 -- 39 in ), and weighs 0.72 -- 1.58 kg ( 1.6 -- 3.5 lb ). Among standard measurements, the wing chord is 25.7 to 30.6 cm ( 10.1 to 12.0 in ), the bill is 4.4 to 6.1 cm ( 1.7 to 2.4 in ), and the tarsus is 4.1 to 4.8 cm ( 1.6 to 1.9 in ). The breeding male mallard is unmistakable, with a glossy bottle - green head and a white collar that demarcates the head from the purple - tinged brown breast, grey - brown wings, and a pale grey belly. The rear of the male is black, with white - bordered dark tail feathers. The bill of the male is a yellowish - orange tipped with black, with that of the female generally darker and ranging from black to mottled orange and brown. The female mallard is predominantly mottled, with each individual feather showing sharp contrast from buff to very dark brown, a coloration shared by most female dabbling ducks, and has buff cheeks, eyebrow, throat, and neck, with a darker crown and eye - stripe. Both male and female mallards have distinct iridescent purple - blue speculum feathers edged with white, which are prominent in flight or at rest but temporarily shed during the annual summer moult. Upon hatching, the plumage of the duckling is yellow on the underside and face ( with streaks by the eyes ) and black on the back ( with some yellow spots ) all the way to the top and back of the head. Its legs and bill are also black. As it nears a month in age, the duckling 's plumage starts becoming drab, looking more like the female, though more streaked, and its legs lose their dark grey colouring. Two months after hatching, the fledgling period has ended, and the duckling is now a juvenile. Between three and four months of age, the juvenile can finally begin flying, as its wings are fully developed for flight ( which can be confirmed by the sight of purple speculum feathers ). Its bill soon loses its dark grey colouring, and its sex can finally be distinguished visually by three factors : 1 ) the bill is yellow in males, but black and orange in females ; 2 ) the breast feathers are reddish - brown in males, but brown in females ; and 3 ) in males, the centre tail feather ( drake feather ) is curled, but in females, the centre tail feather is straight. During the final period of maturity leading up to adulthood ( 6 -- 10 months of age ), the plumage of female juveniles remains the same while the plumage of male juveniles gradually changes to its characteristic colours. This change in plumage also applies to adult mallard males when they transition in and out of their non-breeding eclipse plumage at the beginning and the end of the summer moulting period. The adulthood age for mallards is fourteen months, and the average life expectancy is three years, but they can live to twenty. Several species of duck have brown - plumaged females that can be confused with the female mallard. The female gadwall ( A. strepera ) has an orange - lined bill, white belly, black and white speculum that is seen as a white square on the wings in flight, and is a smaller bird. More similar to the female mallard in North America are the American black duck ( A. rubripes ), which is notably darker - hued in both sexes than the mallard, and the mottled duck ( A. fulvigula ), which is somewhat darker than the female mallard, and with slightly different bare - part colouration and no white edge on the speculum. In captivity, domestic ducks come in wild - type plumages, white, and other colours. Most of these colour variants are also known in domestic mallards not bred as livestock, but kept as pets, aviary birds, etc., where they are rare but increasing in availability. Owing to their highly ' malleable ' genetic code, mallards can display a large amount of variation, as seen here with this female, who displays faded or ' apricot ' plumage. A noisy species, the female has the deep quack stereotypically associated with ducks. Male mallards make a sound phonetically similar to that of the female, a typical quack, but it is a deep and raspy and can also sound like breeeeze. When incubating a nest, or when offspring are present, females vocalise differently, making a call that sounds like a truncated version of the usual quack. They hiss if the nest or offspring are threatened or interfered with. When taking off, the wings of a mallard produce a characteristic faint whistling noise. The mallard is a rare example of both Allen 's Rule and Bergmann 's Rule in birds. Bergmann 's Rule, which states that polar forms tend to be larger than related ones from warmer climates, has numerous examples in birds, as in case of the Greenland mallard which is larger than the mallards further south. Allen 's Rule says that appendages like ears tend to be smaller in polar forms to minimise heat loss, and larger in tropical and desert equivalents to facilitate heat diffusion, and that the polar taxa are stockier overall. Examples of this rule in birds are rare as they lack external ears, but the bill of ducks is supplied with a few blood vessels to prevent heat loss, and, as in the Greenland mallard, the bill is smaller than that of birds farther south, illustrating the rule. Due to the variability of the mallard 's genetic code, which gives it its vast interbreeding capability, mutations in the genes that decide plumage colour are very common and have resulted in a wide variety of hybrids such as Brewer 's duck ( mallard × gadwall, Anas strepera ). Distribution and habitat Male mallard, Sweden 2016 The mallard is widely distributed across the Northern and Southern Hemispheres ; in North America its range extends from southern and central Alaska to Mexico, the Hawaiian Islands, across Eurasia, from Iceland and southern Greenland and parts of Morocco ( North Africa ) in the west, Scandinavia and Britain to the north, and to Siberia, Japan, and South Korea, in the east, south - eastern and south - western Australia and New Zealand in the Southern hemisphere. It is strongly migratory in the northern parts of its breeding range, and winters farther south. For example, in North America, it winters south to the southern United States and northern Mexico, but also regularly strays into Central America and the Caribbean between September and May. The mallard inhabits a wide range of habitats and climates, from Arctic tundra to subtropical regions. It is found in both fresh - and salt - water wetlands, including parks, small ponds, rivers, lakes and estuaries, as well as shallow inlets and open sea within sight of the coastline. Water depths of less than 0.9 metres ( 3.0 ft ) are preferred, with birds avoiding areas more than a few metres deep. They are attracted to bodies of water with aquatic vegetation. Behaviour Feeding The mallard is omnivorous and very flexible in its choice of food. Its diet may vary based on several factors, including the stage of the breeding cycle, short - term variations in available food, nutrient availability, and interspecific and intraspecific competition. The majority of the mallard 's diet seems to be made up of gastropods, invertebrates ( including beetles, flies, lepidopterans, dragonflies, and caddisflies ), crustaceans, worms, many varieties of seeds and plant matter, and roots and tubers. During the breeding season, male birds were recorded to have eaten 37.6 % animal matter and 62.4 % plant matter, most notably Echinochloa crus - galli, and nonlaying females ate 37.0 % animal matter and 63.0 % plant matter, while laying females ate 71.9 % animal matter and only 28.1 % plant matter. Plants generally make up the larger part of a bird 's diet, especially during autumn migration and in the winter. The mallard usually feeds by dabbling for plant food or grazing ; there are reports of it eating frogs. However, in 2017 a flock of mallards in Romania were observed hunting small migratory birds, including grey wagtail and black redstart, the first documented occasion they had been seen attacking and consuming large vertebrates. It usually nests on a river bank, but not always near water. It is highly gregarious outside of the breeding season and forms large flocks, which are known as sords. Breeding Play media Female Mallard with five ducklings ( Lac Archambeault, Québec ) Mallards usually form pairs ( in October and November in the Northern Hemisphere ) until the female lays eggs at the start of the nesting season, which is around the beginning of spring. At this time she is left by the male who joins up with other males to await the moulting period, which begins in June ( in the Northern Hemisphere ). During the brief time before this, however, the males are still sexually potent and some of them either remain on standby to sire replacement clutches ( for female mallards that have lost or abandoned their previous clutch, replacement clutch ) or forcibly mate with females that appear to be isolated or unattached regardless of their species and whether or not they have a brood of ducklings. Egg, Collection Museum Wiesbaden Egg clutches number 8 -- 13 creamy white to greenish - buff eggs free of speckles. They measure about 58 mm ( 2.3 in ) in length and 32 mm ( 1.3 in ) in width. The eggs are laid on alternate days, and incubation begins when the clutch is almost complete. Incubation takes 27 -- 28 days and fledging takes 50 -- 60 days. The ducklings are precocial and fully capable of swimming as soon as they hatch. However, filial imprinting compels them to instinctively stay near the mother, not only for warmth and protection but also to learn about and remember their habitat as well as how and where to forage for food. When ducklings mature into flight - capable juveniles, they learn about and remember their traditional migratory routes ( unless they are born and raised in captivity ). During the breeding season, both male and female mallards can become aggressive, driving off competitors to themselves or their mate by charging at them. Males tend to fight more than females, and attack each other by repeatedly pecking at their rival 's chest, ripping out feathers and even skin on rare occasions. The drakes that end up being left out after the others have paired off with mating partners sometimes target an isolated female duck, even one of a different species, and proceed to chase and peck at her until she weakens, at which point the males take turns copulating with the female. Lebret ( 1961 ) calls this behaviour `` Attempted Rape Flight '', and Stanley Cramp and K.E.L. Simmons ( 1977 ) speak of `` rape - intent flights ''. Male mallards also occasionally chase other male ducks of a different species, and even each other, in the same way. In one documented case of `` homosexual necrophilia '', a male mallard copulated with another male he was chasing after the chased male died upon flying into a glass window. This paper was awarded an Ig Nobel Prize in 2003. Mallards are opportunistically targeted by brood parasites, occasionally having eggs laid in their nests by redheads, ruddy ducks, lesser scaup, gadwalls, northern shovellers, northern pintails, cinnamon teal, common goldeneyes, and other mallards. These eggs are generally accepted when they resemble the eggs of the host mallard, but the hen may attempt to eject them or even abandon the nest if parasitism occurs during egg laying. Predators and threats Mallards of all ages ( but especially young ones ) and in all locations must contend with a wide diversity of predators including raptors, mustelids, corvids, snakes, raccoons, opossums, skunks, turtles, large fish, felids, and canids, including domesticated ones. The most prolific natural predators of adult mallards are red foxes ( which most often pick off brooding females ) and the faster or larger birds of prey, i.e. peregrine falcons, Aquila eagles, or Haliaeetus eagles. In North America, adult mallards face no fewer than 15 species of birds of prey, from northern harriers and short - eared owls ( both smaller than a mallard ) to huge bald and golden eagles, and about a dozen species of mammalian predator, not counting several more avian and mammalian predators who threaten eggs and nestlings. Mallards are also preyed upon by other waterside apex predators, such as the grey heron, European herring gull, the wels catfish, and the northern pike. Crows ( Corvus spp. ) are also known to kill ducklings and adults on occasion. Also, mallards may be attacked by larger anseriformes such as swans ( Cygnus spp. ) and geese during the breeding season, and are frequently driven off by these birds over territorial disputes. Mute swans ( C. olor ) have been known to attack or even kill mallards if they feel that the ducks pose a threat to their offspring. The predation - avoidance behavior of sleeping with one eye open, allowing one brain hemisphere to remain aware while the other half sleeps, was first demonstrated in mallards, although it is believed to be widespread among birds in general. Status and Conservation By Carl Friedrich Deiker ( 1875 ) Play media Several drakes swim in a pond. Since 1998, the mallard has been rated as a species of least concern on the IUCN Red List of Endangered Species. This is because it has a large range -- more than 20,000 km ( 7700 mi ) -- and because its population is increasing, rather than declining by 30 % over ten years or three generations and thus is not warranted a vulnerable rating. Also, the population size of the mallard is very large. Unlike many waterfowl, mallards have benefited from human alterations to the world -- so much so that they are now considered an invasive species in some regions. They are a common sight in urban parks, lakes, ponds, and other man - made water features in the regions they inhabit, and are often tolerated or encouraged in human habitat due to their placid nature towards humans and their beautiful and iridescent colours. While most are not domesticated, mallards are so successful at coexisting in human regions that the main conservation risk they pose comes from the loss of genetic diversity among a region 's traditional ducks once humans and mallards colonise an area. Mallards are very adaptable, being able to live and even thrive in urban areas which may have supported more localised, sensitive species of waterfowl before development. The release of feral mallards in areas where they are not native sometimes creates problems through interbreeding with indigenous waterfowl. These non-migratory mallards interbreed with indigenous wild ducks from local populations of closely related species through genetic pollution by producing fertile offspring. Complete hybridisation of various species of wild duck gene pools could result in the extinction of many indigenous waterfowl. The wild mallard itself is the ancestor of most domestic ducks, and its naturally evolved wild gene pool gets genetically polluted in turn by the domesticated and feral populations. Over time, a continuum of hybrids ranging between almost typical examples of either species develop ; the speciation process is beginning to reverse itself. This has created conservation concerns for relatives of the mallard, such as the Hawaiian duck, the New Zealand grey duck ( A. s. superciliosa ) subspecies of the Pacific black duck, the American black duck, the mottled duck, Meller 's duck, the yellow - billed duck, and the Mexican duck, in the latter case even leading to a dispute as to whether these birds should be considered a species ( and thus entitled to more conservation research and funding ) or included in the mallard species. Ecological changes and hunting have also led to a decline of local species ; for example, the New Zealand grey duck population declined drastically due to overhunting in the mid-20th century. Hybrid offspring of Hawaiian ducks seem to be less well adapted to native habitat, and using them in re-introduction projects apparently reduces success. In summary, the problems of mallards `` hybridising away '' relatives is more a consequence of local ducks declining than of mallards spreading ; allopatric speciation and isolating behaviour have produced today 's diversity of mallard - like ducks despite the fact that, in most, if not all, of these populations, hybridisation must have occurred to some extent. Invasiveness The last male Mariana mallard Mallards are causing severe `` genetic pollution '' to South Africa 's biodiversity by breeding with endemic ducks even though the Agreement on the Conservation of African - Eurasian Migratory Waterbirds -- an agreement to protect the local waterfowl populations -- applies to the mallard as well as other ducks. The hybrids of mallards and the yellow - billed duck are fertile, capable of producing hybrid offspring. If this continues, only hybrids occur and in the long term result in the extinction of various indigenous waterfowl. The mallard duck can cross breed with 63 other species, posing a severe threat to indigenous waterfowl 's genetic integrity. Mallards and their hybrids compete with indigenous birds for resources, including nest sites, roosting sites, and food. Availability of mallards, mallard ducklings, and fertilised mallard eggs for public sale and private ownership, either as livestock or as pets, is currently legal in the United States except for the state of Florida, which has currently banned domestic ownership of mallards. This is to prevent hybridisation with the native mottled duck. The mallard is considered an invasive species in New Zealand, where it competes with the local New Zealand grey duck, which was overhunted in the past. There, and elsewhere, mallards are spreading with increasing urbanisation and hybridising with local relatives. The Eastern or Chinese spot - billed duck is currently introgressing into the mallard populations of the Primorsky Krai, possibly due to habitat changes from global warming. The Mariana mallard was a resident allopatric population -- in most respects a good species -- apparently initially derived from mallard - Pacific black duck hybrids ; unfortunately, it became extinct in the late 20th century. The Laysan duck is an insular relative of the mallard, with a very small and fluctuating population. Mallards sometimes arrive on its island home during migration, and can be expected to occasionally have remained and hybridised with Laysan ducks as long as these species have existed. However, these hybrids are less well adapted to the peculiar ecological conditions of Laysan Island than the local ducks, and thus have lower fitness. These ducks were found throughout the Hawaiian archipelago before 400 AD, after which they suffered a rapid decline during the Polynesian colonisation. Now, their range includes only Laysan Island. It is one of the successfully translocated birds, after having become nearly extinct in the early 20th century. Relationship with humans Further information : Domestic duck Domestication Mallard have often been ubiquitous in their regions among the ponds, rivers, and streams of human parks, farms, and other man - made waterways -- even to the point of visiting water features in human courtyards. George Hetzel, Mallard still life painting, 1883 -- 1884 Mallard have had a long relationship with humans. Almost all domestic duck breeds derive from the mallard, with the exception of a few Muscovy breeds. Mallards are generally monogamous while domestic ducks are mostly polygamous. Domestic ducks have no territorial behaviour and are less aggressive than mallards. Domestic ducks are mostly kept for meat, as their eggs have a strong flavor. They were first domesticated in Southeast Asia at least 4000 years ago, during the Neolithic Age, and were also farmed by the Romans in Europe, and the Malays in Asia. It is also common for mallards to mate with domestic ducks and produce hybrid offspring that are fully fertile. Due to this, mallards have been found to be contaminated with the genes of the domestic duck. Hunting Mallards are one of the most common varieties of ducks hunted as a sport. The ideal location for hunting mallards is considered to be where the water level is somewhat shallow. Hunting mallards might cause the population to decline in some places, at some times, and with some populations. In certain countries, the mallard may be legally shot but is protected under national acts and policies. For example, in the United Kingdom, the mallard is protected under the Wildlife and Countryside Act 1981, which restricts certain hunting methods or taking or killing mallards. As food Since ancient times, the mallard has been eaten as food. The wild mallard was eaten in Neolithic Greece. Usually, only the breast and thigh meat is eaten. It does not need to be hung before preparation, and is often braised or roasted, sometimes flavoured with bitter orange or with port. References ^ Jump up to : `` Anas platyrhynchos ( Common Mallard, Mallard, Northern Mallard ) ''. www.iucnredlist.org. 2016. Archived from the original on 23 December 2016. Retrieved 19 June 2017. Jump up ^ Linnaeus, Carl ( 1758 ). Systema naturae per regna tria naturae, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis. Tomus I. Editio decima, reformata ( in Latin ). Laurentius Salvius. p. 125. Jump up ^ Jobling, James A. ( 2010 ). Helm Dictionary of Scientific Bird Names. Bloomsbury Publishing. ISBN 9781408133262. Jump up ^ Johnsgard, Paul A. ( 1961 ). `` Evolutionary relationships among the North American mallards. ''. The Auk. 78 ( 1 ) : 3 -- 43 ( 11 -- 12 ). Jump up ^ Jobling, James A ( 2010 ). The Helm Dictionary of Scientific Bird Names. Christopher Helm. pp. 46, 309. ISBN 978 - 1 - 4081 - 2501 - 4. Jump up ^ Huang, Y. ; Li, Y. ; Burt, D.W. ; Chen, H. ; Zhang, Y. ; Qian, Wubin ; Kim, Heebal ; Gan, Shangquan ; Zhao, Yiqiang ; Li, Jianwen ; Yi, Kang ; Feng, Huapeng ; Zhu, Pengyang ; Li, Bo ; Liu, Qiuyue ; Fairley, Suan ; Magor, Katharine E ; Du, Zhenlin ; Hu, Xiaoxiang ; Goodman, Laurie ; Tafer, Hakim ; Vignal, Alain ; Lee, Taeheon ; Kim, Kyu - Won ; Sheng, Zheya ; An, Yang ; Searle, Steve ; Herrero, Javier ; Groenen, Martien A.M. ; et al. ( 2013 ). `` The duck genome and transcriptome provide insight into an avian influenza virus reservoir species ''. Nature Genetics. Nature Publishing. 45 ( 7 ) : 776 -- 783. PMC 4003391. PMID 23749191. doi : 10.1038 / ng. 2657. Jump up ^ Magnus, PD ( 2012 ), Scientific Enquiry and Natural Kinds : from Planets to Mallards, Palgrave Macmillan, ISBN 9781137271259 Jump up ^ Buckingham, James Silk ; Sterling, John ; Maurice, Frederick Denison ; Stebbing, Henry ; Dilke, Charles Wentworth ; Hervey, Thomas Kibble ; Dixon, William Hepworth ; Maccoll, Norman ; Rendall, Vernon Horace ( 1904 ). The Athenaeum : A Journal of Literature, Science, the Fine Arts, Music, and the Drama. J. Francis. Jump up ^ `` mallard ''. Oxford English Dictionary ( 2nd ed. ). Oxford University Press. 1989. Jump up ^ Wedgwood, Hensleigh ( 1862 ). Dictionary of English Etymology. Trübner and Company. Jump up ^ Phillips, John C. ( 1915 ). `` Experimental studies of hybridization among ducks and pheasants ''. Journal of Experimental Zoology. 18 ( 1 ) : 69 -- 112. doi : 10.1002 / jez. 1400180103. ^ Jump up to : Steadman, David W. ( 2005 ). `` Late Pleistocene Birds from Kingston Saltpeter Cave, Southern Appalachian Mountains, Georgia ''. The Bulletin of the Florida Museum of Natural History : 231 -- 248. Jump up ^ Anonymous ( 1937 ). Proceedings of the Royal Society of Edinburgh. Oliver & Boyd. p. 210. Jump up ^ Johnson, Kevin P. ; Sorenson, M.D. ( 1999 ). `` Phylogeny and biogeography of dabbling ducks ( genus Anas ) : a comparison of molecular and morphological evidence '' ( PDF ). The Auk. 116 ( 3 ) : 792 -- 805. doi : 10.2307 / 4089339. ^ Jump up to : Kulikova, Irina V. ; Drovetski, S.V. ; Gibson, D.D. ; Harrigan, R.J. ; Rohwer, S. ; Sorenson, Michael D. ; Winker, K. ; Zhuravlev, Yury N. ; McCracken, Kevin G. ( 2005 ). `` Phylogeography of the Mallard ( Anas platyrhynchos ) : hybridization, dispersal, and lineage sorting contribute to complex geographic structure ''. The Auk. 122 ( 3 ) : 949 -- 965. doi : 10.1642 / 0004 - 8038 ( 2005 ) 122 ( 0949 : POTMAP ) 2.0.CO ; 2. ( Erratum : The Auk 122 ( 4 ) : 1309, doi : 10.1642 / 0004 - 8038 ( 2005 ) 122 ( 1309 : POTMAP ) 2.0.CO ; 2. ) Jump up ^ Delacour, Jean ( 1964 ). The Waterfowl of the World. Country Life. Jump up ^ Kraus, R.H.S. ; Zeddeman, A. ; van Hooft, P. ; Sartakov, D. ; Soloviev, S.A. ; Ydenberg, Ronald C. ; Prins, Herbert H.T. ( 2011 ). `` Evolution and connectivity in the world - wide migration system of the mallard : Inferences from mitochondrial DNA ''. BMC Genetics. 12 ( 99 ) : 99. PMC 3258206. PMID 22093799. doi : 10.1186 / 1471 - 2156 - 12 - 99. Jump up ^ Kraus, R.H.S. ; van Hooft, P. ; Megens, H. - J. ; Tsvey, A. ; Fokin, S.Y. ; Ydenberg, Ronald C. ; Prins, Herbert H.T. ( 2013 ). `` Global lack of flyway structure in a cosmopolitan bird revealed by a genome wide survey of single nucleotide polymorphisms ''. Molecular Ecology ( published January 2013 ). 22 ( 1 ) : 41 -- 55. PMID 23110616. doi : 10.1111 / mec. 12098. ^ Jump up to : Kulikova, Irina V. ; Zhuravlev, Yury N. ; McCracken, Kevin G. ( 2004 ). `` Asymmetric hybridization and sex - biased gene flow between Eastern Spot - billed Ducks ( Anas zonorhyncha ) and Mallards ( A. platyrhynchos ) in the Russian Far East ''. The Auk. 121 ( 3 ) : 930 -- 949. doi : 10.1642 / 0004 - 8038 ( 2004 ) 121 ( 0930 : AHASGF ) 2.0.CO ; 2. Jump up ^ Lavretsky, Philip ; McCracken, Kevin G. ; Peters, Jeffrey L. ( January 2014 ). `` Phylogenetics of a recent radiation in the mallards and allies ( Aves : Anas ) : inferences from a genomic transect and the multispecies coalescent ''. Molecular Phylogenetics and Evolution. 70 : 402 -- 411. ISSN 1095 - 9513. PMID 23994490. doi : 10.1016 / j. ympev. 2013.08. 008. ^ Jump up to : Ogilvie, M.A. ; Young, Steve ( 2002 ). Wildfowl of the World. New Holland Publishers. ISBN 9781843303282. ^ Jump up to : Cramp, Stanley, ed. ( 1977 ). Handbook of the Birds of Europe the Middle East and North Africa, the Birds of the Western Palearctic. Volume 1 : Ostrich to Ducks. Oxford University Press. ISBN 9780198573586. Jump up ^ Dunning, John B. Jr., ed. ( 1992 ). CRC Handbook of Avian Body Masses. CRC Press. ISBN 978 - 0 - 8493 - 4258 - 5. Jump up ^ Madge, Steve ( 1992 ). Waterfowl : An Identification Guide to the Ducks, Geese, and Swans of the World. Houghton Mifflin Harcourt. ISBN 978 - 0 - 395 - 46726 - 8. Jump up ^ Ogilvie, M.A. ; Young, Steve ( 2002 ). Wildfowl of the World. New Holland Publishers. ISBN 9781843303282. Jump up ^ Jiguet, Frédéric ; Audevard, Aurélien ( 21 March 2017 ). Birds of Europe, North Africa, and the Middle East : A Photographic Guide. Princeton University Press. ISBN 9780691172439. ^ Jump up to : Fergus, Charles ; Hansen, Amelia ( 2000 ). Wildlife of Pennsylvania and the Northeast. Stackpole Books. ISBN 9780811728997. ^ Jump up to : Lancaster, John Frederick ( 17 December 2013 ). The inheritance of plumage colour in the common duck ( Anas platyrhynchos linné ). Springer. ISBN 9789401768344. Jump up ^ Station, Delta Waterfowl and Wetlands Research ( 1984 ). Annual Report. The Station. ^ Jump up to : Moulton, Judy ( 7 November 2014 ). Daisy and Ducky Mallard. Xlibris Corporation. ISBN 9781503511910. ^ Jump up to : Vinicombe, Keith ( 27 March 2014 ). The Helm Guide to Bird Identification. Bloomsbury Publishing. ISBN 9781472905543. Jump up ^ Robinson, R.A. ( 2005 ). `` Mallard Anas platyrhynchos ''. BirdFacts : profiles of birds occurring in Britain & Ireland ( BTO Research Report 407 ). British Trust for Ornithology. Archived from the original on 13 December 2013. Retrieved 10 February 2015. Jump up ^ Moss, Stephen ; Cottridge, David ( 2000 ). Attracting Birds to Your Garden. New Holland Publishers. ISBN 9781859740057. ^ Jump up to : Kaufman, Kenn ( 2005 ). Kaufman Field Guide to Birds of North America. Houghton Mifflin Harcourt. ISBN 0618574239. ^ Jump up to : Hicks, James Stephen ( 1923 ). The Encyclopaedia of Poultry. Waverley Book Company. Jump up ^ `` Everglades News Mallards ''. American Bird. 3 June 2015. Archived from the original on 7 September 2016. Retrieved 26 June 2017. Jump up ^ Bent, Arthur Cleveland ( 1962 ). Life Histories of North American Wild Fowl. Courier Corporation. ISBN 9780486254227. Jump up ^ Salewski, Volker ; Hochachka, Wesley M. ; Fiedler, Wolfgang ( September 2009 ). `` Global warming and Bergmann 's rule : do central European passerines adjust their body size to rising temperatures ? ''. Oecologia. 162 ( 1 ) : 247 -- 260. ISSN 0029 - 8549. PMC 2776161. PMID 19722109. doi : 10.1007 / s00442 - 009 - 1446 - 2. Jump up ^ Shelomi, Matan ; Zeuss, Dirk ( 2017 ). `` Bergmann 's and Allen 's Rules in Native European and Mediterranean Phasmatodea ''. Frontiers in Ecology and Evolution. 5. ISSN 2296 - 701X. doi : 10.3389 / fevo. 2017.00025. Jump up ^ Bidau, Claudio J. ; Martí, Dardo A. ( August 2008 ). `` A test of Allen 's rule in ectotherms : the case of two south American Melanopline Grasshoppers ( Orthoptera : Acrididae ) with partially overlapping geographic ranges ''. Neotropical Entomology. 37 ( 4 ) : 370 -- 380. ISSN 1519 - 566X. doi : 10.1590 / S1519 - 566X2008000400004. Jump up ^ Ducks Unlimited Magazine. 67 -- 68. Ducks Unlimited, Incorporated. 2003. p. 62. Jump up ^ `` Brewer 's Duck ''. audubon.org. National Audubon Society. Archived from the original on 13 May 2014. Retrieved 19 May 2012. ^ Jump up to : Madge, Steve ( 2010 ). Wildfowl. A&C Black. p. 212. ISBN 9781408138953. Jump up ^ Skerrett, Adrian ; Disley, Tony ( 2016 ). Birds of Seychelles. Bloomsbury Publishing. p. 48. ISBN 9781472946010. ^ Jump up to : Finlayson, Clive ( 2010 ). Birds of the Strait of Gibraltar. Bloomsbury Publishing. p. 219. ISBN 9781408136942. Jump up ^ Prins, Herbert H.T. ; Namgail, Tsewang ( 6 April 2017 ). Bird Migration across the Himalayas : Wetland Functioning amidst Mountains and Glaciers. Cambridge University Press. ISBN 9781107114715. ^ Jump up to : Yamaguchi, Noriyuki ; Hiraoka, Emiko ; Fujita, Masaki ; Hijikata, Naoya ; Ueta, Mutsuyuki ; Takagi, Kentaro ; Konno, Satoshi ; Okuyama, Miwa ; Watanabe, Yuki ( September 2008 ). `` Spring migration routes of mallards ( Anas platyrhynchos ) that winter in Japan, determined from satellite telemetry ''. Zoological Science. 25 ( 9 ) : 875 -- 881. ISSN 0289 - 0003. PMID 19267595. doi : 10.2108 / zsj. 25.875. Jump up ^ Lever, Christopher ( 2010 ). Naturalised Birds of the World. Bloomsbury Publishing. p. 89. ISBN 9781408133125. Jump up ^ Lever, Christopher ( 2010 ). Naturalised Birds of the World. Bloomsbury Publishing. p. 89. ISBN 9781408133125. Jump up ^ Anonymous. International Wildfowl Inquiry Volume i Factors Affecting the General Status of Wild Geese and Wild Duck. Cambridge University Press. Jump up ^ Smith, Loren M. ; Pederson, Roger L. ; Kaminski, Richard M. ( 1989 ). Habitat Management for Migrating and Wintering Waterfowl in North America. Texas Tech University Press. ISBN 9780896722040. Jump up ^ Service, U.S. Fish and Wildlife ( 1975 ). Final environmental statement for the issuance of annual regulations permitting the sport hunting of migratory birds. U.S. Dept. of the Interior, U.S. Fish & Wildlife Service. Jump up ^ Tunnell, John Wesley ; Judd, Frank W. ( 2002 ). The Laguna Madre of Texas and Tamaulipas. Texas A&M University Press. p. 180. ISBN 9781585441334. Jump up ^ Winkler, Lawrence ( 2012 ). Westwood Lake Chronicles. Lawrence Winkler. ISBN 9780991694105. Jump up ^ Guthrie, Russell Dale ( 2001 ). People and Wildlife in Northern North America : Essays in Honor of R. Dale Guthrie. Archaeopress. ISBN 9781841712369. Jump up ^ Burton, Maurice ; Burton, Robert ( 2002 ). International Wildlife Encyclopedia : Leopard -- marten. Marshall Cavendish. p. 1525. ISBN 9780761472773. Jump up ^ `` Mallard Duck Elmwood Park Zoo Elmwood Park Zoo www.elmwoodparkzoo.org ''. www.elmwoodparkzoo.org. 2015. Archived from the original on 18 February 2017. Retrieved 19 June 2017. Jump up ^ van Toor, Mariëlle L. ; Hedenström, Anders ; Waldenström, Jonas ; Fiedler, Wolfgang ; Holland, Richard A. ; Thorup, Kasper ; Wikelski, Martin ( 30 August 2013 ). `` Flexibility of Continental Navigation and Migration in European Mallards ''. PLoS ONE. 8 ( 8 ). ISSN 1932 - 6203. PMC 3758317. PMID 24023629. doi : 10.1371 / journal. pone. 0072629. Jump up ^ Krapu, Gary L. ; Reinecke, Kenneth J. ( 1992 ). `` Foraging ecology and nutrition ''. In Batt, Bruce D.J. ; Afton, Alan D. ; Anderson, Michael G. ; Ankney, C. Davison ; Johnson, Douglas H. ; Kadlec, John A. ; Krapu, Gary L. Ecology and Management of Breeding Waterfowl. University of Minnesota Press. pp. 1 -- 30 ( 10 ). ISBN 978 - 0 - 8166 - 2001 - 2. ^ Jump up to : Baldassarre, Guy A. ( 2014 ). Ducks, Geese, and Swans of North America. Johns Hopkins University Press. p. 410. ISBN 9781421407517. Jump up ^ Eldridge, Jan ( 1990 ). `` Waterfowl Management Handbook '' ( PDF ). Fish and Wildlife Leaflet. ^ Jump up to : Rappole, John H. ( 2012 ). Wildlife of the Mid-Atlantic : A Complete Reference Manual. University of Pennsylvania Press. p. 102. ISBN 0812222016. Jump up ^ Swanson, George A. ; Meyer, Mavis I. ; Adomaitis, Vyto A. ( 1985 ). `` Foods consumed by breeding mallards on wetlands of south - central North Dakota ''. Journal of Wildlife Management. 49 ( 1 ) : 197 -- 203. JSTOR 3801871. doi : 10.2307 / 3801871. Jump up ^ Gruenhagen, Ned M. ; Fredrickson, Leigh H. ( 1990 ). `` Food use by migratory female mallards in northwest Missouri ''. Journal of Wildlife Management. 54 ( 4 ) : 622 -- 626. JSTOR 3809359. doi : 10.2307 / 3809359. Jump up ^ Combs, Daniel L. ; Fredrickson, Leigh H. ( 1990 ). `` Foods used by male mallards wintering in southeastern Missouri ''. Journal of Wildlife Management. 60 ( 3 ) : 603 -- 610. JSTOR 3802078. doi : 10.2307 / 3802078. Jump up ^ Sandilands, Al ( 2011 ). Birds of Ontario : Habitat Requirements, Limiting Factors, and Status : Volume 1 -- Nonpasserines : Loons through Cranes. University of British Columbia Press. p. 60. ISBN 9780774859431. Jump up ^ Briggs, Helen ( 30 June 2017 ). `` Wild ducks caught on camera snacking on small birds ''. BBC News. BBC. Retrieved 30 June 2017. Jump up ^ Anonymous ( 2005 ). The Encyclopedia of Birds. Parragon Publishing India. p. 50. ISBN 9781405498517. Jump up ^ Ginn, H.B. ; Melville, Dorothy Sutherland ( 1983 ). Moult in birds. British Trust for Ornithology. Jump up ^ Boere, G.C. ; Galbraith, Colin A. ; Stroud, David A. ( 2006 ). Waterbirds Around the World : A Global Overview of the Conservation, Management and Research of the World 's Waterbird Flyways. The Stationery Office. ISBN 9780114973339. ^ Jump up to : Boere, G.C. ; Galbraith, Colin A. ; Stroud, David A. ( 2006 ). Waterbirds Around the World : A Global Overview of the Conservation, Management and Research of the World 's Waterbird Flyways. The Stationery Office. p. 359. ISBN 9780114973339. Jump up ^ Feinstein, Julie ( 2011 ). Field Guide to Urban Wildlife. Stackpole Books. p. 130. ISBN 9780811705851. ^ Jump up to : Burton, Maurice ; Burton, Robert ( 2002 ). International Wildlife Encyclopedia : Leopard -- marten. Marshall Cavendish. ISBN 9780761472773. Retrieved 16 June 2016. ^ Jump up to : Hauber, Mark E. ( 2014 ). The Book of Eggs : A Life - Size Guide to the Eggs of Six Hundred of the World 's Bird Species. University of Chicago Press. p. 83. ISBN 978 - 0 - 226 - 05781 - 1. Jump up ^ DK ; International, BirdLife ( 1 March 2011 ). The Illustrated Encyclopedia of Birds. Dorling Kindersley Limited. ISBN 9781405336161. Jump up ^ Al - Obaidi, Faris ; Al - Shadeedi, Shahrazad ( July 2016 ). `` Comparison Study of Egg Morphology, Component and Chemical Composition of Mallard Duck and Domestic Peking Duck '' ( PDF ). The Journal of Bio Innovation : 555 -- 562. Jump up ^ Townsley, Frank ( 10 March 2016 ). British Columbia : Graced by Nature 's Palette. FriesenPress. ISBN 9781460277737. Jump up ^ Kear, Janet ( 30 November 2010 ). Man and Wildfowl. Bloomsbury Publishing. ISBN 9781408137604. ^ Jump up to : Moeliker, Cornelis ( 2001 ). `` The first case of homosexual necrophilia in the mallard Anas platyrhynchos ( Aves : Anatidae ) '' ( PDF ). Deinsea 8 : 243 -- 248. Jump up ^ Annals of Improbable Research. MIT Museum. 2005. Jump up ^ Baldassarre, Guy A. ( 2014 ). Ducks, Geese, and Swans of North America. JHU Press. ISBN 9781421407517. ^ Jump up to : Drilling, Nancy ; Titman, Roger ; McKinney, Frank ( 2002 ). Poole, A., ed. `` Mallard ( Anas platyrhynchos ) ''. The Birds of North America Online. Cornell Lab of Ornithology. doi : 10.2173 / bna. 658. Archived from the original on 21 June 2016. Retrieved 1 February 2011. Jump up ^ Martz, Gerald F. ( 1967 ). `` Effects of nesting cover removal on breeding puddle ducks ''. Journal of Wildlife Management : 236 -- 247. Jump up ^ `` Impact of Red Fox Predation on the Sex Ratio of Prairie Mallards ''. USGS Northern Prairie Wildlife Research Center. 3 August 2006. Archived from the original on 2 January 2015. Retrieved 23 August 2012. Jump up ^ Marquiss, M. ; Leitch, A.F. ( 1 October 1990 ). `` The diet of Grey Herons Ardea cinerea breeding at Loch Leven, Scotland, and the importance of their predation on ducklings ''. Ibis. 132 ( 4 ) : 535 -- 549. ISSN 1474 - 919X. doi : 10.1111 / j. 1474 - 919X. 1990. tb00277. x. Jump up ^ Reader 's Digest Scenic wonders of Canada : an illustrated guide to our natural splendors. Reader 's Digest Association ( Canada ). 1976. ISBN 9780888500496. Jump up ^ Adams, Mary ( October 1995 ). Ecosystem Matters : Activity and Resource Guide for Environmental Educators. DIANE Publishing. ISBN 9780788124532. Jump up ^ Fray, Rob ; Davies, Roger ; Gamble, Dave ; Harrop, Andrew ; Lister, Steve ( 30 June 2010 ). The Birds of Leicestershire and Rutland. Bloomsbury Publishing. ISBN 9781408133118. Jump up ^ Niels C., Rattenborg ( 1999 ). `` Half - awake to the risk of predation ''. Nature. 397 : 397 -- 398. Jump up ^ `` Anas platyrhynchos ( Common Mallard, Mallard, Northern Mallard ) ''. www.iucnredlist.org. 2016. Archived from the original on 23 December 2016. Retrieved 18 July 2017. ^ Jump up to : Mooney, H.A. ; Cleland, E.E. ( 8 May 2001 ). `` The evolutionary impact of invasive species ''. Proceedings of the National Academy of Sciences. 98 ( 10 ) : 5446 -- 5451. ISSN 0027 - 8424. PMC 33232. PMID 11344292. doi : 10.1073 / pnas. 091093398. Jump up ^ Leedy, Daniel L. ; Adams, Lowell W. ( 1984 ). A Guide to Urban Wildlife Management. National Institute for Urban Wildlife. ^ Jump up to : Uyehara, Kimberly ; Engilis, Andrew ; Reynolds, Michelle. Hendley, James, ed. `` Hawaiian Duck 's Future Threatened by Feral Mallards '' ( PDF ). Archived from the original ( PDF ) on 4 May 2017. Retrieved 19 June 2017. ^ Jump up to : Rhymer, Judith M. ( 2006 ). `` Extinction by hybridization and introgression in anatine ducks '' ( PDF ). Acta Zoologica Sinica. 52 ( Supplement ) : 583 -- 585. ^ Jump up to : Rhymer, Judith M. ; Simberloff, Daniel ( 1996 ). `` Extinction by hybridization and introgression ''. Annual Review of Ecology and Systematics. 27 : 83 -- 109. doi : 10.1146 / annurev. ecolsys. 27.1. 83. Jump up ^ Griffin, C.R. ; Shallenberger, F.J. ; Fefer, S.I. ( 1989 ). `` Hawaii 's endangered waterbirds : a resource management challenge ''. In Sharitz, R.R. ; Gibbons, I.W. Proceedings of Freshwater Wetlands and Wildlife Symposium. Savannah River Ecology Lab. pp. 155 -- 169. ^ Jump up to : Williams, Murray ; Basse, Britta ( 2006 ). `` Indigenous gray ducks, Anas superciliosa, and introduced mallards, A. platyrhynchos, in New Zealand : processes and outcome of a deliberate encounter '' ( PDF ). Acta Zoologica Sinica. 52 ( Supplement ) : 579 -- 582. Jump up ^ Avise, John C. ; Ankney, C. Davison ; Nelson, William S. ( 1990 ). `` Mitochondrial gene trees and the evolutionary relationship of Mallard and Black Ducks '' ( PDF ). Evolution. 44 ( 4 ) : 1109 -- 1119. doi : 10.2307 / 2409570. Jump up ^ Mank, Judith E. ; Carlson, John E. ; Brittingham, Margaret C. ( 2004 ). `` A century of hybridization : decreasing genetic distance between American black ducks and mallards ''. Conservation Genetics. 5 ( 3 ) : 395 -- 403. doi : 10.1023 / B : COGE. 0000031139.55389. b1. ^ Jump up to : McCracken, Kevin G. ; Johnson, William P. ; Sheldon, Frederick H. ( 2001 ). `` Molecular population genetics, phylogeography, and conservation biology of the mottled duck ( Anas fulvigula ) ''. Conservation Genetics. 2 ( 2 ) : 87 -- 102. doi : 10.1023 / A : 1011858312115. Jump up ^ Young, H. Glyn ; Rhymer, Judith M. ( 1998 ). `` Meller 's duck : A threatened species receives recognition at last ''. Biodiversity and Conservation. 7 ( 10 ) : 1313 -- 1323. doi : 10.1023 / A : 1008843815676. Jump up ^ American Ornithologists ' Union ( 1983 ). Check - list of North American Birds ( 6th ed. ). American Ornithologists ' Union. Jump up ^ Kirby, Ronald E. ; Sargeant, Glen A. ; Shutler, Dave ( 2004 ). `` Haldane 's rule and American black duck × mallard hybridization ''. Canadian Journal of Zoology. 82 ( 11 ) : 1827 -- 1831. doi : 10.1139 / z04 - 169. Jump up ^ Tubaro, Pablo L. ; Lijtmaer, Dario A. ( 1 October 2002 ). `` Hybridization patterns and the evolution of reproductive isolation in ducks ''. Biological Journal of the Linnean Society. 77 ( 2 ) : 193 -- 200. ISSN 0024 - 4066. doi : 10.1046 / j. 1095 - 8312.2002. 00096. x. ^ Jump up to : `` Invasive Alien Bird Species Pose A Threat, Kruger National Park, Siyabona Africa Travel ( Pty ) Ltd -- South Africa Safari Travel Specialist ''. krugerpark.co.za. 2008. Archived from the original on 12 November 2016. Retrieved 23 August 2012. Jump up ^ `` Agreement on the Conservation of African - Eurasian Migratory Waterbirds '' ( PDF ). Official Journal of the European Union. Archived from the original ( PDF ) on 19 June 2017. Retrieved 19 June 2017. ^ Jump up to : `` Marina da Gama ''. www.mdga.co.za. 2007. Archived from the original on 11 February 2017. Retrieved 19 June 2017. Jump up ^ marsh, david ( 1 June 2010 ). `` Those Mighty Mallards Can Bust the Speed Limit ''. San Quentin News. Archived from the original on 15 June 2017. Retrieved 19 June 2017. Jump up ^ `` Mallard Possession Rule ''. Florida Fish and Wildlife Conservation Commission. 10 July 2004. Archived from the original on 18 October 2016. Retrieved 10 February 2015. Jump up ^ Yamashina, Y. ( 1948 ). `` Notes on the Marianas mallard ''. Pacific Science. 2 : 121 -- 124. Jump up ^ Madge, Steve ; Burn, Hilary ( 2010 ) ( 1989 ). Wildfowl. Christopher Helm Publ. p. 211. ISBN 1408138956. Jump up ^ Browne, Robert ; Griffin, Curtice ; Chang, Paul ; Hubley, Mark ; Martin, Amy ( 1993 ). `` Genetic Divergence Among Populations of the Hawaiian Duck, Laysan Duck, and Mallard ''. The Auk. American Ornithological Society. 110 ( 1 ) : 49 -- 56. JSTOR 4088230. Jump up ^ `` Recovery Strategy -- Laysan Duck Revised Recovery Plan ''. www.fws.gov. September 2009. Archived from the original on 20 June 2017. Retrieved 19 June 2017. ^ Jump up to : Myers, P. ; Espinosa, R. ; Parr, C.S. ; Jones, T. ; Hammond, G.S. ; Dewey, T.A. ( 2016 ). `` Anas laysanensis ( Laysan duck ) ''. Animal Diversity Web. Archived from the original on 13 March 2016. Retrieved 19 June 2017. Jump up ^ Clostridium Infections : Advances in Research and Treatment : 2011 Edition : ScholarlyPaper. ScholarlyEditions. 9 January 2012. ISBN 9781464960130. Jump up ^ Channel Improvements, Columbia and Lower Willamette River Federal Navigation Channel, ( OR, WA ) : Environmental Impact Statement. 1999. Jump up ^ Appleby, Michael C. ; Mench, Joy A. ; Hughes, Barry O. ( 2004 ). Poultry Behaviour and Welfare. CABI. ISBN 9780851996677. ^ Jump up to : Piggott, Stuart ; Thirsk, Joan ( 2 April 1981 ). The Agrarian History of England and Wales : Volume 1, Part 1, Prehistory. CUP Archive. ISBN 9780521087414. Jump up ^ Kear, Janet ( 2005 ). Ducks, Geese and Swans : General chapters, species accounts ( Anhima to Salvadorina ). Oxford University Press. ISBN 978 - 0 - 198 - 61008 - 3. ^ Jump up to : Wood - Gush, D. ( 6 December 2012 ). Elements of Ethology : A textbook for agricultural and veterinary students. Springer Science & Business Media. ISBN 9789400959316. Jump up ^ O'Neill, Michael J. ( February 1973 ). Field & Stream. 77. Columbia Broadcasting System Publications. p. 108. Jump up ^ Cape Cod National Seashore ( N.S. ), Hunting Program : Environmental Impact Statement. 2007. p. 90. Jump up ^ Walsingham, Lord ( 2016 ). Tips for Pheasant Shooting from some of the Finest Hunters. Read Books Ltd. ISBN 1473357055. Jump up ^ Dalby, Andrew ( 15 April 2013 ). Food in the Ancient World from A to Z. Routledge. ISBN 9781135954222. Jump up ^ The Visual Food Encyclopedia. Québec Amerique. 1996. ISBN 9782764408988. Jump up ^ Davidson, Alan ( 2006 ). The Oxford Companion to Food. Oxford University Press. p. 472. ISBN 9780191018251. External links Wikimedia Commons has media related to Anas platyrhynchos. Wikispecies has information related to : Anas platyrhynchos `` Mallard media ''. Internet Bird Collection. Mallard photo gallery at VIREO ( Drexel University ) Game animals and shooting in the United Kingdom Game birds Common pheasant Grey partridge Red - legged partridge Red grouse Rock ptarmigan Black grouse Eurasian woodcock Common snipe Quarry species Mallard Teal Wood pigeon Golden plover Canada goose Greylag goose Pink - footed goose Greater white - fronted goose Eurasian wigeon Tufted duck Northern shoveller Northern pintail Gadwall Common pochard Common goldeneye Common moorhen Eurasian coot Deer Red deer Roe deer Fallow deer Sika deer Reeves 's muntjac Water deer Other quarry European hare Red fox European rabbit Opponents League Against Cruel Sports Animal Aid Law Game Act 1831 Hunting Act 2004 See also British Association for Shooting and Conservation Hunting and shooting in the United Kingdom Game & Wildlife Conservation Trust Countryside Alliance Driven grouse shooting Glorious Twelfth Gamekeeper Deer stalking Rarely shot due to declining numbers. England and Wales only ; protected in Scotland. Game animals and shooting in the United States Game birds Bobwhite quail Chukar Hungarian partridge Prairie chicken Mourning dove Ring - necked pheasant Ptarmigan Ruffed grouse Sharp - tailed grouse Snipe ( common snipe ) Spruce grouse Turkey Woodcock Waterfowl Black duck Canada goose Canvasback Gadwall Greater scaup Lesser scaup Mallard Northern pintail Redhead Ross 's goose Snow goose Wood duck Big game Bighorn sheep Black bear Razorback Brown bear Bison ( buffalo ) Caribou Cougar ( mountain lion ) Elk Moose White - tailed deer Gray wolf Mountain goat Mule deer Pronghorn Muskox Dall sheep Polar bear Other quarry American alligator Bobcat Coyote Fox squirrel Gray fox Gray squirrel Opossum Rabbit Red fox Snowshoe hare See also Bear hunting Big game hunting Bison hunting Deer hunting Waterfowl hunting Whaling Fishing Wolf hunting Upland hunting Taxon identifiers Wd : Q25348 ADW : Anas_platyrhynchos BioLib : 8460 EoL : 1047918 Fossilworks : 83434 GBIF : 2498132 IBC : mallard - anas - platyrhynchos iNaturalist : 6930 ITIS : 175063 IUCN : 22680186 NCBI : 8839 ARKive : mallard / anas - platyrhynchos WoRMS : 148791 Retrieved from `` https://en.wikipedia.org/w/index.php?title=Mallard&oldid=808393832 '' Categories : IUCN Red List least concern species Anas Birds described in 1758 Ducks Invasive bird species Migratory birds ( Eastern Hemisphere ) Migratory birds ( Western Hemisphere ) Urban animals Holarctic birds Native birds of the Eastern United States Hidden categories : CS1 Latin - language sources ( la ) EngvarB from August 2017 Good articles Use dmy dates from August 2017 Articles with ' species ' microformats Articles containing French - language text Articles containing German - language text All articles with unsourced statements Articles with unsourced statements from August 2017 Articles containing video clips Talk Contents About Wikipedia Wikispecies Адыгэбзэ Afrikaans Alemannisch አማርኛ অসমীয়া Asturianu Azərbaycanca تۆرکجه বাংলা Bân - lâm - gú Башҡортса Беларуская Беларуская ( тарашкевіца ) ‎ Български Brezhoneg Català Чӑвашла Cebuano Čeština Cymraeg Dansk Davvisámegiella Deutsch Diné bizaad Eesti Ελληνικά Español Esperanto Euskara فارسی Føroyskt Français Frysk Gaeilge Gàidhlig Galego 한국어 Հայերեն Hrvatski Bahasa Indonesia Interlingua Iñupiak Ирон Íslenska Italiano עברית Kalaallisut Kaszëbsczi Қазақша Коми Кыргызча Кырык мары Latgaļu Latina Latviešu Lietuvių Livvinkarjala Magyar Македонски मराठी Bahasa Melayu Монгол မြန်မာဘာသာ Nāhuatl Nederlands नेपाली 日本 語 Нохчийн Nordfriisk Norsk Norsk nynorsk Occitan Oʻzbekcha / ўзбекча پنجابی Picard Piemontèis Plattdüütsch Polski Português Română Runa Simi Русиньскый Русский Саха тыла Scots Simple English Slovenčina Slovenščina Српски / srpski Srpskohrvatski / српскохрватски Suomi Svenska Tagalog தமிழ் Татарча / tatarça ไทย Türkçe Türkmençe Удмурт Українська Tiếng Việt Winaray 粵語 Žemaitėška 中文 Edit links This page was last edited on 2 November 2017, at 16 : 20. 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Question: when do male mallard ducks get their colors
Answer: 6–10 months of age