It is a word of Greek origin meaning spongy, soft, fluffy. It is the name of a genus of South American birds known mostly as chavarrías. They belong to the family Anhimidae. The crested is a purely vegetarian ave,
Chauna: A genus of aquatic birds anseriformes of the family of the animidos that inhabit the wetlands of South America and are called chajaes, tapacares, chicaguires, or chavarries.