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Documents disponibles écrits par cet auteur (7)
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Article
Pablo F. Petracci, Auteur ; Julian M. Burgos, Auteur ; Gabriela C. Lopez, Auteur ; Kaspar Delhey, Auteur ; Martin Carrizo, Auteur ; Rodolfo Sarria, Auteur ; Martin Sotelo, Auteur ; Gustavo M. Somoza, Auteur ; Luciano F. La Sala, AuteurOlrog's Gull (Lams atlanticus) is a vulnerable species; however, no study has addressed the relationship between body measurements and sex. To provide an easy and reliable work tool to identify the sex of individuals, adult Olrog's Gulls (n = 11[...]
Article
Rebekah Soanes, Auteur ; Anne Peters, Auteur ; Kaspar Delhey, Auteur ; J. Sean Doody, AuteurThe attributes of a nest-site that a bird selects may be influenced by the potential predator species present, as different types of predator use different foraging strategies and sensory cues to locate nests. However, in many studies of avian n[...]
Article
Kaspar Delhey, Auteur ; Bart Kempenaers, AuteurIn many species of passerine birds yearlings display a less elaborate version of the adult secondary sexual traits, but the causes of such differences in ornamentation are not always well understood. We studied age-related changes in blue tit Pa[...]
Article
Ralf H. J. M. Kurvers, Auteur ; Kaspar Delhey, Auteur ; Mark L. Roberts, Auteur ; Anne Peters, Auteur
Article
Kaspar Delhey, Auteur ; Martin Carrizo, Auteur ; Lucas Verniere, Auteur ; Bettina Mahler, Auteur ; Anne Peters, AuteurCosts imposed by brood parasitic birds exert strong selection on their hosts to avoid parasitism. While egg rejection is a common defence, nestling rejection is rarer and less well understood. Theoretical models suggest that among non-evicting p[...]
Article
Angelika Poesel, Auteur ; Torben Dabelsteen, Auteur ; Safi-Kirstine Darden, Auteur ; Kaspar Delhey, Auteur ; Anne Peters, AuteurMultiple phenotypic traits can affect the outcome of interactions among territorial animals. Individuals may use current and previously acquired information on phenotypic traits to assess the competitive ability of opponents and adjust the stren[...]
Article
Anne Peters, Auteur ; Mark L. Roberts, Auteur ; Ralf H. J. M. Kurvers, Auteur ; Kaspar Delhey, AuteurA number of mechanisms are responsible for producing the variation in natural colours, and these need not act in isolation. A recent hypothesis states that carotenoid-based coloration, in addition to carotenoid availability, is also enhanced by [...]
