Bucerotiformes

**Bucerotiformes** is an order that contains the hornbills, hoopoe, and wood hoopoes. These birds are sometimes classified as members of Coraciiformes, although increasing amounts of evidence seem to support them as being distinctive enough to warrant their own order.

## Contents

* 1Systematics
	+ 1.1Taxonomy
* 2References
* 3Further reading

## Systematics[edit]

Recent genetic data show that ground hornbills and *Bycanistes* form a clade outside the rest of the hornbill lineage. They are thought to represent an early African lineage, while the rest of Bucerotiformes evolved in Asia. The hoopoe subspecies Saint Helena hoopoe and the Madagascar subspecies are sometimes elevated to a full species. The two wood hoopoe genera, *Phoeniculus* and *Rhinopomastus*, appear to have diverged about 10 million years ago, so some systematists treat them as separate subfamilies or even separate families.

### Taxonomy[edit]

**Order Bucerotiformes**

* *†Laurillardia smoleni*
* Suborder Upupi
	+ Family Phoeniculidae
		- Genus *Phoeniculus*
			* Green wood hoopoe, *Phoeniculus purpureus*
			* Violet wood hoopoe, *Phoeniculus damarensis*
			* Black-billed wood hoopoe, *Phoeniculus somaliensis*
			* White-headed wood hoopoe, *Phoeniculus bollei*
			* Forest wood hoopoe, *Phoeniculus castaneiceps*
		- Genus *Rhinopomastus*
			* Black scimitarbill, *Rhinopomastus aterrimus*
			* Common scimitarbill, *Rhinopomastus cyanomelas*
			* Abyssinian scimitarbill, *Rhinopomastus minor*
	+ Family Upupidae
		- Genus *Upupa*
			* Eurasian hoopoe, *Upupa epops*
			* African hoopoe, *Upupa africana*
			* Madagascan hoopoe, *Upupa marginata*
* Suborder Buceroti
	+ Family Bucorvidae
		- Genus *Bucorvus*
			* Abyssinian ground hornbill, *Bucorvus abyssinicus*
			* Southern ground hornbill, *Bucorvus leadbeateri*
	+ Family Bucerotidae
		- Genus *Bycanistes*
			* Trumpeter hornbill, *Bycanistes bucinator*
			* Piping hornbill, *Bycanistes fistulator*
			* Silvery-cheeked hornbill, *Bycanistes brevis*
			* Black-and-white-casqued hornbill, *Bycanistes subcylindricus*
			* Brown-cheeked hornbill, *Bycanistes cylindricus*
			* White-thighed hornbill, *Bycanistes albotibialis*
		- Genus *Tropicranus* (sometimes included in *Tockus*)
			* White-crested hornbill, *Tropicranus albocristatus*
		- Genus *Tockus*
			* Black dwarf hornbill, *Tockus hartlaubi*
			* Red-billed dwarf hornbill, *Tockus camurus*
			* Monteiro's hornbill, *Tockus monteiri*
			* Red-billed hornbill group
				+ Northern red-billed hornbill, *Tockus erythrorhynchus*
				+ Damara red-billed hornbill, *Tockus damarensis*
				+ Southern red-billed hornbill, *Tockus rufirostris*
				+ Tanzanian red-billed hornbill, *Tockus ruahae*
				+ Western red-billed hornbill, *Tockus kempi*
			* Eastern yellow-billed hornbill, *Tockus flavirostris*
			* Southern yellow-billed hornbill, *Tockus leucomelas*
			* Jackson's hornbill, *Tockus jacksoni*
			* Von der Decken's hornbill, *Tockus deckeni*
			* Crowned hornbill, *Tockus alboterminatus*
			* Bradfield's hornbill, *Tockus bradfieldi*
			* African pied hornbill, *Tockus fasciatus*
			* Hemprich's hornbill, *Tockus hemprichii*
			* Pale-billed hornbill, *Tockus pallidirostris*
			* African grey hornbill, *Tockus nasutus*
		- Genus *Ocyceros*
			* Malabar grey hornbill, *Ocyceros griseus*
			* Sri Lanka grey hornbill, *Ocyceros gingalensis*
			* Indian grey hornbill, *Ocyceros biostris*
		- Genus *Anthracoceros*
			* Malabar pied hornbill, *Anthracoceros coronatus*
			* Oriental pied hornbill, *Anthracoceros albirostris*
			* Black hornbill, *Anthracoceros malayanus*
			* Palawan hornbill, *Antracoceros marchei*
			* Sulu hornbill, *Anthracoceros montani*
		- Genus *Buceros*
			* Rhinoceros hornbill, *Buceros rhinoceros*
			* Great hornbill, *Buceros bicornis*
			* Rufous hornbill, *Buceros hydrocorax*
		- Genus *Rhinoplax* (sometimes included in *Buceros*)
			* Helmeted hornbill, *Rhinoplax vigil*
		- Genus *Anorrhinus*
			* Austen's brown hornbill, *Anorrhinus austeni*
			* Tickell's brown hornbill, *Anorrhinus tickelli*
			* Bushy-crested hornbill, *Anorrhinus galeritus*
		- Genus *Penelopides*
			* Luzon hornbill, *Penelopides manillae*
			* Mindoro hornbill, *Penelopides mindorensis*
			* Visayan hornbill, *Penelopides panini*
			* Samar hornbill, *Penelopides samarensis*
			* Mindanao hornbill, *Penelopides affinis*
			* Sulawesi hornbill, *Penelopides exarhatus*
		- Genus *Berenicornis* (sometimes included in *Aceros*)
			* White-crowned hornbill, *Berenicornis comatus*
		- Genus *Aceros*
			* Rufous-necked hornbill, *Aceros nipalensis*
			* Wrinkled hornbill, *Aceros corrugatus*
			* Writhed hornbill, *Aceros leucocephalus*
			* Rufous-headed hornbill, *Aceros waldeni*
			* Knobbed hornbill, *Aceros cassidix*
		- Genus *Rhyticeros* (sometimes included in *Aceros*)
			* Wreathed hornbill, *Rhyticeros undulatus*
			* Narcondam hornbill, *Rhyticeros narcondami*
			* Sumba hornbill, *Rhyticeros everetti*
			* Plain-pouched hornbill, *Rhyticeros subruficollis*
			* Papuan hornbill, *Rhyticeros plicatus*
		- Genus *Ceratogymna*
			* Black-casqued hornbill, *Ceratogymna atrata*
			* Yellow-casqued hornbill, *Ceratogymna elate*