La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Ageing Afrotropical birds in the hand: a proposed system
Auteurs :	C. Jackson, Auteur
Type de document :	Article
Dans :	Ostrich (No number JUL 2001)
Article en page(s) :	62-65
Langues:	Anglais
Résumé :	A number of aspects of avian biology are known to vary according to the age and sex of an individual. In studies of bird populations using ringing as a technique, accurate age determination is therefore a vital component. The European EURING age code system provides a neat system by which to categorise the age of an individual of Palaearctic species. As this is based on a set breeding season, it cannot be applied to tropical Africa where the breeding season varies between species, between, localities, and sometimes between years. Existing ageing systems used in Africa differ between regions and even ringers,and often there are no clear or easily applied definitions for the different age classes. An age code system is proposed that. allows Afrotropical birds in the hand to be placed into clearly defined age classes. The age data thus collected may be easily compared and analysed as well as shared between observers.

Lundi , mardi et jeudi de 9h à 12h et de 13h à 17h00 : ouverture au public ...