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The eastern long-tailed hornbill (Horizocerus cassini) is a species of bird in the hornbill family Bucerotidae found in humid forests of West Africa. It was formerly considered to be conspecific with the western long-tailed hornbill ( Horizocerus albocristatus ) with the English name "white-crested hornbill".
Knobbed hornbill Sulawesi, Buton, Lembeh, Togian and Muna Island. An undescribed extinct hornbill species from Lifou in the Loyalty Islands , living until at least some 30,000 years ago, was initially placed in Aceros , but its biogeography places it with the species now in Rhyticeros (Steadman, 2006).
Hornbills in the genus Buceros include some of the largest arboreal hornbills in the world, with the largest being the great hornbill.All the hornbills in this genus have a large and hollow bony casque on their upper beak that can be useful to scientists and bird watchers to recognise their age, sex and species.
Recent genetic data show that ground hornbills and Bycanistes form a clade outside the rest of the hornbill lineage. [6] They are thought to represent an early African lineage, while the rest of Bucerotiformes evolved in Asia.
It is the heaviest, but not the longest, Asian hornbill. [9] [10] With the separation of the ground hornbills into a separate family, Bucorvidae, the great hornbill reigns as the heaviest of all typical hornbills. [9] [11] Females are smaller than males and have bluish-white instead of red eyes, although the orbital skin is pinkish. Like other ...
The rufous-necked hornbill (Aceros nipalensis) is a species of hornbill in Bhutan, northeastern India, especially in Arunachal Pradesh, Indian Subcontinent and Southeast Asia. It is locally extinct in Nepal due to hunting and significant loss of habitat. [1] There are less than 10,000 adults left in the wild. [3]
The southern red-billed hornbill (Tockus rufirostris) is a species of hornbill in the family Bucerotidae, which is native to the savannas and dryer bushlands of southern Africa. It is replaced by a near-relative, the Damara red-billed hornbill, in the arid woodlands of western Namibia. All five red-billed hornbills were formerly considered ...
Walden's hornbill Rhabdotorrhinus waldeni (Sharpe, 1877) Philippines Size: Habitat: Diet: CR Writhed hornbill Male Female Rhabdotorrhinus leucocephalus (Vieillot, 1816) the Philippine islands of Mindanao, Dinagat and Camiguin Sur Size: Habitat: Diet: NT Sulawesi hornbill Male Female Rhabdotorrhinus exarhatus (Temminck, 1823)