Potter Park Zoo on Twitter: "@sparty_will In most hornbill species, the casque is a hollow or spongy structure made out of keratin. It is believed that this structure acts as a vibrating
Greensboro Science Center - Ronnie is ready for her close up 💅 Did you know that trumpeter hornbills possess a casque on top of their bill that is thought to aid in
Phoenix Zoo - The rhinoceros hornbill gets its name from the hollow rhino horn-shaped casque on its beak. The casque is made of keratin (the same material as human fingernails) and amplifies
Greensboro Science Center - It's Trumpeter Hornbill Tuesday! Fun fact: the casque on the hornbill's bill makes it very heavy. Fortunately, hornbills' necks are much larger and stronger than most, PLUS their
![Closeup Of Helmeted Guinea Fowl, Large African Game Bird With Unfeathered Head With Bony Casque On The Head, Beautiful Grey Plumage, Speckled With White Spots In Tanzania, East Africa Stock Photo, Picture Closeup Of Helmeted Guinea Fowl, Large African Game Bird With Unfeathered Head With Bony Casque On The Head, Beautiful Grey Plumage, Speckled With White Spots In Tanzania, East Africa Stock Photo, Picture](https://previews.123rf.com/images/siamphotos/siamphotos1812/siamphotos181200048/116488722-closeup-of-helmeted-guinea-fowl-large-african-game-bird-with-unfeathered-head-with-bony-casque-on.jpg)
Closeup Of Helmeted Guinea Fowl, Large African Game Bird With Unfeathered Head With Bony Casque On The Head, Beautiful Grey Plumage, Speckled With White Spots In Tanzania, East Africa Stock Photo, Picture
![Southern cassowary close-up portrait. Australian double-wattled cassowary (Casuarius casuarius) is huge bird with blue skin on face and neck, two red wattles and horn-like brown casque on the head. Stock Photo Southern cassowary close-up portrait. Australian double-wattled cassowary (Casuarius casuarius) is huge bird with blue skin on face and neck, two red wattles and horn-like brown casque on the head. Stock Photo](https://as2.ftcdn.net/v2/jpg/02/37/79/41/1000_F_237794159_ZVVpetqK4yrPmQ8k0el5DSAPWuPWHqfh.jpg)
Southern cassowary close-up portrait. Australian double-wattled cassowary (Casuarius casuarius) is huge bird with blue skin on face and neck, two red wattles and horn-like brown casque on the head. Stock Photo
![The Helmeted Hornbill (Rhinoplax vigil) has a robust casque on the top of its bill that it uses in aerial jousting. : r/Awwducational The Helmeted Hornbill (Rhinoplax vigil) has a robust casque on the top of its bill that it uses in aerial jousting. : r/Awwducational](https://external-preview.redd.it/GEp6LhgNlUl0773Zn27W41xpkm9HxFlwua6SVmump74.jpg?auto=webp&s=c4a3ab9eda4a201806113ae0a9892674f0bbecdd)