La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Tertials as important feature for ageing Common Snipes Gallinago gallinago - Description of additional characters.
Auteurs :	Michael Schmitz, Auteur
Type de document :	Article
Dans :	Vogelwelt (Die) (128(1) 2007)
Article en page(s) :	39-42
Résumé :	Ageing the Common Snipe is complex and at present only practised while examining caught specimens based on plummage characters and measurements. Here, some additional features of the tertials are described, which allow the age determination e.g. during ringing and shoulda also work under field conditions. Juvenile feathers show narrow pale bars, which are generally more roufous, and broad dark brown bars. Broader pale bars of a grey-brown coloration are typical for adults. Furthermore, adults have a different moult cycle. They renew their tertials much earlier in comparison to juveniles. Together with the described feather characteristics, the timing of tertial moult provides an additional feature for ageing the Common Snipe. All characters are subject to a considerable individuals variation.

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