### animal | vertebrate | bird | hummingbird:

Female hummingbird
* Most female hummingbirds visit territory.
* are born with two ovaries
  - usually larger than male hummingbirds
* build their nests on top of limbs of deciduous trees.
* do all the nest building.

Male hummingbird
* are very aggressive.
* can be quite aggressive in defense of their territory.
* lead a carefree life.
* provide no care to their offspring.

Rufous hummingbird
* are very cold hardy.
* play chase amongst the red flowers, sometimes resting on dead branches.

Tiny hummingbird
* beat wings.
* eat mostly nectar, which sugary liquid made by flowers.

### animal | vertebrate | bird:

Immature bird
* Most immature birds have brownish eyes
  - coloration
  - dark eyes
  - different coloration
  - feathers
  - gray feathers
  - plumages
  - undersides
* Some immature birds have bronze
  - buffs
* are a dull green, with no distinct cheek patch
  - paler yellow splotched with brown
* are brown above and white below with brown bill and legs
  - above, streaked below
  - rather than purple
  - brownish with tan to whitish breasts and necks
  - dark brown with mottled white wings and are often confused with golden eagles
  - difficult to sex
  - dingy gray and have a yellowish bill
  - duller black without the breast band and have dark eyes
* are duller in coloration
  - colour, have a barred forehead and a pinkish-violet cere
  - generally paler than adults with a white wash on the throat
  - grayish brown with a light-colored bill
* are grey and have dark flight feathers
  - in colour overall
  - light brown to chocolate above
  - paler in color and have feathered heads
* are similar in appearance to adult females
  - to the female, but have an orange-pink bill instead of black
* form roaming flocks.
* have brownish black bodies, black and gray bills, and dusky colored heads and tails
* have dark bars on the breast and lack the distinctive tail bands of the adult
* have darker beaks and eyes than adults
  - feathers, a dark bill and dark eye stripes on white heads
  - plumage, a dark bill, dark eye stripes, and white heads
  - gray-black heads
  - higher total protein, uric acid, and potassium levels than do adult birds
  - light grey plumage with darker brownish nape and remiges
  - white plumage with varying tints of pink
* look like washed out, lighter-brown versions of the females.

Incubate bird
* change positions.
* use bills.

Individual bird
* More individual birds are on the wing than at any other time of year.
* are outfitted with leg bands as nestlings, so they can be identified later in life.
* foraging for food also signal the flock when they find a good food source.
* vary tremendously in pair bonds and social situations.

Infect bird
* Most infect birds have eyes
  - sit in yards
* Some infect birds die of infection
  - secondary infection
  - make food
  - swell eyes

Infected bird
* appear emaciated with diarrhoea.
* are able to provide the virus to mosquitoes for several days
  - often asymptomatic
* can develop respiratory rales and sneeze
  - spread the virus in their saliva, nasal secretions, and feces
* pass bacteria in their fecal droppings
  - fetid watery diarrhea
* spread the bacteria in their droppings.

Insectivorous bird
* Some insectivorous birds consume pollen.
* are a separate matter.
* are the largest group of migrants
  - most common vertebrate predators feeding on larvae
* increase growth of white oak through consumption of leaf-chewing insects.

Jacamar
* are slender birds with rather long tails and long, sharp bills.
* inhabit a variety of environments, from rain forests to dry grasslands.
* nest in an unlined burrow in a river bank or disused termite nest.
* resemble large hummingbirds but are more closely related to woodpeckers.