La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Field identification and ageing of Siberian Stonechats in spring and summer
Auteurs :	Magnus Hellstrom, Auteur ; Mats Waern, Auteur
Type de document :	Article
Dans :	British Birds (104(5) MAY 2011)
Article en page(s) :	236-254
Résumé :	The Common Stonechat Saxicola torquatus is a widespread breeding species in the Palearctic region. This paper discusses the reliability of characters that enable birds from Europe (S. t. rubicola) to be separated from those breeding in western Siberia and central Asia (S. t. maurus), particularly during the breeding season when differences become subtle. The current understanding of plumage variability within and between these races is discussed, and some gaps in our knowledge of Siberian birds are addressed. Emphasis is placed upon assessing the validity of the different characters. The timing and extent of moult and wear are crucial to the understanding of these characters and of how they can affect appearance over time. Other Palearctic races are discussed where relevant. Careful observation and attention to detail are essential when faced with a potential maurus in Europe in spring but individuals of both sexes should provide sufficient clues for identification, if seen well.

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