What is "chauna"

Chaja \Cha"ja\, n. [Native name.] (Zo["o]l.) The crested screamer of Brazil ( Palamedea chavaria syn. Chauna chavaria), so called in imitation of its notes; -- called also chauna, and faithful kamichi. It is often domesticated and is useful in guarding other poultry. See Kamichi. [1913 Webster] ||

Chauna is a genus of birds in the screamer family. Its two members are found in wetlands of South America. The species are

• Southern screamer or crested screamer, Chauna torquata
• Northern screamer or black-necked screamer, Chauna chavaria

They are large, bulky birds, with a small downy head, long legs and large feet which are only partially webbed. They have large spurs on their wings which are used in fights over mates and territorial disputes. The southern screamer is overall fairly common and sometimes considered a pest as it raids crops and competes with farm birds for food. In contrast, the northern screamer is relatively rare and therefore considered near threatened.