Harrison, Atlas of the Birds of the Western Palaearctic
Mullarney et al., Collins Bird Guide
Snow & Perrins, Birds of the Western Palearctic concise edition
Suomi: levinneisyydet: 1) läntinen alalaji kesällä, 2) läntinen alalajin ympäri vuoden, 3) harmaapäätikli (ssp. caniceps) kesällä, 4) harmaapäätikli (ssp. caniceps) ympäri vuoden
Date
22 November 2006 (original upload date)
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