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The black-casqued hornbill (Ceratogymna atrata), or black-casqued wattled hornbill, is a species of hornbill in the family Bucerotidae. It is found fairly commonly across sub-Saharan Africa, being known from Sierra Leone and Liberia in Western Africa (as well as most of the West African nations along the Gulf of Guinea ), south to Angola and ...
The black-and-white-casqued hornbill (Bycanistes subcylindricus) also known as the grey-cheeked hornbill, is a large black and white hornbill. It has an oversized blackish bill with a large casque on top. The female is slightly smaller than the male and has a significantly smaller casque.
Skeletons of female (left) and male (right) black-casqued hornbills, showing the sexual dimorphism present on their bills. (Museum of Osteology)The members of the genus Bycanistes have been included in this genus, but today most authorities consider the two separate.
The brightest colours on most hornbills, like this pair of knobbed hornbills, are found on the beaks and bare skin of the face and throat. Hornbills show considerable variation in size and colors. The smallest species is the black dwarf hornbill (Tockus hartlaubi), at 99.1 g (3.50 oz) and 32 cm (1 ft 1 in) in length.
Female great hornbill Hornbills are birds in the families Bucerotidae and Bucorvidae. There are currently 62 extant species of hornbills recognised by the International Ornithologists' Union, two in Bucorvidae and 60 in Bucerotidae. Many species of fossil hornbills are known from the Miocene onwards; however, their exact number and taxonomy are unsettled due to ongoing discoveries. Conventions ...
All species in this genus have black and white plumage. The plumage of the sexes is similar, but the casque of the male is larger than that of the female. Recent genetic data shows that Bycanistes is the sister taxon to ground hornbills , this clade having diverged from the rest of the hornbill lineage early on. [ 2 ]
The great hornbill (Buceros bicornis), also known as the concave-casqued hornbill, great Indian hornbill or great pied hornbill, is one of the larger members of the hornbill family. It occurs in the Indian subcontinent and Southeast Asia. It is predominantly frugivorous, but also preys on small mammals, reptiles and birds.
The black hornbill (Anthracoceros malayanus) is a species of bird of the hornbill family Bucerotidae. It lives in Asia in Brunei Darussalam, Indonesia, Malaysia, Singapore, Thailand. The species has a selectiveness towards the environment and resources when it comes to reproduction. It is a lowland specialist. [3]