La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	The initialisation of a replacement clutch after the loss of chicks by the Common Swift Apus apus (2010)
Auteurs :	G Gory, Auteur
Type de document :	Article
Dans :	Alauda (78(2) juin, 2010)
Article en page(s) :	1-4
Résumé :	Since 1980, we have monitored 1101 clutches laid in the 66 accessible cavities ot a colony of Common Swifts situated in the former Jesuit College at Nîmes (Gard). Among these clutches, fifty can be said to be "replacements". Generally replacement clutches are only laid after the destruction of the first clutch, when the loss of the latter takes place relatively early in the season. In 2005 we observed that a couple had produced a replacement clutch while one of the two eggs of the first clutch was still viable, leading to the hatching of a chick from the first clutch, and 21 days later a chick from the replacement clutch. In 2008 a double replacement clutch was observed after the loss of the first clutch and of two eggs from the first replacement clutch. In 2009 we noted for the first time the production of a replacement clutch after the loss of two chicks from the first clutch.

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