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The hornbill family are remarkable for the very large size of the beak, and the large protuberance that sits atop it. The upper protuberance is hollow and serves as a sounding board to cause reverberations when the bird cries out.

Hornbill

The hornbill family are remarkable for the very large size of the beak, and the large protuberance that…

"Hornbills are a remarkable group of birds confined to Southern Asia and Africa, akin to the kingfishers and the toucans, remarkable for the very large size of the bill, and for an extraordinary horny protuberance by which it is surmounted, nearly as large as the bill itself, and of cellular structure within."—(Charles Leonard-Stuart, 1911)

Hornbill

"Hornbills are a remarkable group of birds confined to Southern Asia and Africa, akin to the kingfishers…

A concave hornbill perched on a branch, with mountains rising behind it.

Concave Hornbill

A concave hornbill perched on a branch, with mountains rising behind it.

"Dichoceros bicornis of India and the Malay countries has a large yellowish-red casque, hallowed and ending in two points anteriorly, which shews black markings in the males; the naked orbits are pinkish." A. H. Evans, 1900 This sketch depicts a female Hornbill laying down next to her young, feeding it.

Female Hornbill Laying Down Feeding Her Young

"Dichoceros bicornis of India and the Malay countries has a large yellowish-red casque, hallowed and…

The Rytidoceros undulatus, Plait-billed Hornbill, or Wreathed Hornbill, has black wings, belly, and back. The male has a buff colored head with red plumes from the nape, a naked yellow gular pouch that has a black stripe. The female has a black head and neck with a blue gular pouch. The feet are black, the bill yellow, the the iris red.

Plait-billed Hornbill

The Rytidoceros undulatus, Plait-billed Hornbill, or Wreathed Hornbill, has black wings, belly, and…

A genus of hornbills, of the family <i>Bucerotidæ</i>, characterized by the peculiar form of the casque and by the curly crest.

Sphagolobus

A genus of hornbills, of the family Bucerotidæ, characterized by the peculiar form of the casque and…