Détail de l'auteur
Documents disponibles écrits par cet auteur (3)
Ajouter le résultat dans votre panier Affiner la recherche
Article
C. Kullberg, Auteur ; N. B. Metcalfe, Auteur ; D. C. Houston, AuteurDuring the breeding season, many female passerine birds increase in body mass before egg laying, maintain a relatively high body mass during incubation, and then drop back to the original level during the chick-rearing period. The post-hatching [...]
Article
T. Fransson, Auteur ; S. Jakobsson, Auteur ; C. Kullberg, AuteurMany long-distance migrant birds regularly have to pass ecological barriers, like the Saharan desert, where fuelling is very difficult, and large fuel loads have to be stored in advance. In this paper, we have investigated how seven species of b[...]
Article
C. Kullberg, AuteurBehavioural studies indicate that the use of foraging niches in wintering tits is the outcome of a trade-off between using sites rich in food and keeping exposure to predators as low as possible. Previous studies suggest that predation risk vari[...]
