Geographic diversification in the call repertoire ofthe genus Pyrrhocorax (Aves, Corvidae)

Alpine Chough (Pyrrhocorax graculus) Science Article 2


We analysed the call repertoires of the Red-billed Chough (Pyrrhocorax pyrrhocorax) and the AlpineChough (Pyrrhocorax graculus) across three continents (Europe, Asia, and Africa) for intraspecific and interspecificdifferences in call-repertoire size and discuss the factors that could have promoted its evolution.

Paola Laiolo, Antonio Rolando, Anne Delestrade, and Augusto De Sanctis, Can. J. Zool. 79: 1568-1576 (2001)

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