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Yellow-billed Chough (Pyrrhocorax graculus); alpine chough | |||
alpine chough (Pyrrhocorax graculus) | |||
Alpine chough (Pyrrhocorax graculus); yellow-billed chough (Pyrrhocorax graculus); alpine chough (f., pyrrhocorax graculus) | |||
alpine chough (Pyrrhocorax graculus) |