Données complémentaires sur les années sabbatiques du puffin cendré Calonectris diomedea borealis de l' île Selvagem Grande (30° 09 N, 15° 52 W)

Abstract

Every year about 7% of the total number of Cory's Shearwaters which are actually breeding on the island of Selvagem Grande temporarily interrupt reproduction or take «sabbatical leave». At the end of these absences, which may several consecutive years, th