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Colony size and foraging range in seabirds [Oikos]

Keywords : birds, food, group living, marine, sociality, phylogenetic comparative analysis

par Frédéric Magné - publié le

The reasons for variation in group size among animal species remain poorly understood. Using “Ashmole’s halo” hypothesis of food depletion around colonies, we predict that foraging range imposes a ceiling on the maximum colony size of seabird species. We tested this with a phylogenetic comparative study of 43 species of seabirds (28,262 colonies), and investigated the interspecific correlation between colony size and foraging ranges.(...)

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