Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Two species of chough constitute the genus Pyrrhocorax of the Corvidae (crow) family of birds. These are the Red-billed Chough (Pyrrhocorax pyrrhocorax), and the Alpine or Yellow-billed Chough (P. graculus). Their closest relatives outside the genus appear to be the jackdaws of the genus Corvus. The White-winged Chough of Australia, despite its name, is a member of the family Corcoracidae and only distantly related.

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