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A bony extension on the head of of a bird. Cassowaries and hornbills have a casque, typically larger in the male[1].


Casque location
Location of the casque on a hornbill
Casque location2
Location of the casque on a guineafowl.



References[]

  1. ^ Frances, Peter; et al. (2007). Bird: The Definitive Visual Guide. Dorling Kindersley Inc. ISBN 1564582957. 
Anatomy of an amiotic egg This article is part of Project Glossary, an All Birds project that aims to write comprehensive articles on each term related to animals.


Little Pied Cormorant This article is part of Project Anatomy, a All Birds project that aims to write comprehensive articles on each anatomical term related to birds.
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