La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	A study on parental effort of the Kestrel Falco tinnunculus
Auteurs :	N Boileau, Auteur ; Claire Hoede, Auteur
Type de document :	Article
Dans :	Alauda (77 janvier 1, 2009)
Article en page(s) :	93-101
Résumé :	Parental effort (Pe) has been studied in the Eurasian Kestrel Falco tinnunculus in the nature reserve of Moëze-Oléron (Charente-Maritime, Western France) (N = 26 breeding pairs from 1999 to 2004). Pe has been estimated in both sexes by (1) hunting effort (as a percentage of time spent hunting), (2) food provisioning rate (number of prey items delivered to the nest) and (3) biomass delivered to the nest. Pe increases in both sexes between incubation and nestling phase with a Pe more important in males. No relation has been found between Pe and clutch size or numbers of fledglings. However Pe in males increases significantly with numbers of fledglings. No relation with feeding resources has been found except a slight increase between the density of small rodents and Pe in males. No effect has been observed between composition of feeding diet of both adults and fledglings and Pe. Most results on Pe at Moëze are similar to those found in several studies elsewhere in Europe. Most of the observed variations of Pe between the different pairs can be attributed to the individual quality of breeding adults.

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