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Bucerotidae. As their name implies, the hornbills have a distinctive bony casque on the upper surface of their bills, which is partly or largely hollow. The function of this casque is still debated, as it is used to chisel off bark, as well as in combat between rival males, but a small opening to the mouth suggests that it may also Nature Animals, Animals And Pets, Funny Animals, Cute Animals, Beautiful Owl, Animals Beautiful, Photo Animaliere, Owl Pictures, Tier Fotos
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Superb Owl Sunday

Bucerotidae. As their name implies, the hornbills have a distinctive bony casque on the upper surface of their bills, which is partly or largely hollow. The function of this cas... 
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theatlantic
The Atlantic
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