| Titre : | Journal of Avian Biology 42(4) - JUL 2011 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
Celia K. S. Chui, Auteur ;
Kevin J. McGraw, Auteur ;
Stéphanie M. Doucet, Auteur
Carotenoid-based ornamental coloration has long been proposed to honestly signal quality due to its dependence on individual condition. Because migration can be one of the most stressful periods of an animal's annual cycle, developing colourful [...]
Article
Jean-François Therrien, Auteur ;
Gilles Gauthier, Auteur ;
Joel Bety, Auteur
Top predators of the arctic tundra are facing a long period of very low prey availability during winter and subsidies from other ecosystems such as the marine environment may help to support their populations. Satellite tracking of snowy owls, a[...]
Article
Carlos Palacín, Auteur ;
Juan Carlos Alonso, Auteur ;
Javier A. Alonso, Auteur ;
Marina Magana, Auteur ;
Carlos A. Martín, Auteur
Factors responsible for individual variation in partial migration patterns are poorly known, and identifying possible causes of these changes is essential for understanding the flexibility in migratory behavior. Analyzing 190 life histories of g[...]
Article
Satu Lampila, Auteur ;
Markku Orell, Auteur ;
Laura Kvist, Auteur
Through extrapair matings, males can sire additional offspring with low cost and females may look for direct benefits in form of food or additional paternal care or gain genetic benefits that increase offspring fitness. We studied the patterns o[...]
Article
Jerry W. Hupp, Auteur ;
Noriyuki Yamaguchi, Auteur ;
Paul L. Flint, Auteur ;
John M. Pearce, Auteur ;
Ken-ichi Tokita, Auteur ;
Tetsuo Shimada, Auteur ;
Andrew M. Ramey, Auteur ;
Sergei Kharitonov, Auteur ;
Hiroyoshi Higuchi, Auteur
In North America, spring migration routes and breeding distribution of northern pintails Anas acuta vary because some individuals opportunistically nest at mid-latitudes in years when ephemeral prairie wetlands are available, whereas others regu[...]
Article
Steffen Oppel, Auteur ;
Deborah J. Pain, Auteur ;
Jeremy A. Lindsell, Auteur ;
Lars Lachmann, Auteur ;
Ibrahima Diop, Auteur ;
Cosima Tegetmeyer, Auteur ;
Paul F. Donald, Auteur ;
Guy Anderson, Auteur ;
Christopher G. R. Bowden, Auteur ;
Franziska Tanneberger, Auteur ;
Martin Flade, Auteur
Stable isotope analysis of feathers can be useful in the study of seasonal interactions and migratory connectivity in birds. For the Palaearctic-African migration system, however, the lack of isotope data from feathers of known origin in Africa [...]
Article
Detecting conspecific brood parasitism using egg morphology in black brant Branta bernicla nigricans
Patrick R. Lemons, Auteur ;
James S. Sedinger, Auteur ;
Pamela Svete Randle, Auteur
Numerous methods have been proposed to indirectly detect conspecific brood parasitism (CBP) in birds. Egg morphology has been suggested as a predictor of parasitism, assuming that variation in egg size is greater among females than within female[...]
Article
Michelangelo Morganti, Auteur ;
Ugo Mellone, Auteur ;
Giuseppe Bogliani, Auteur ;
Nicola Saino, Auteur ;
Andrea Ferri, Auteur ;
Fernando Spina, Auteur ;
Diego Rubolini, Auteur
Departure and stopover decisions are crucial for a successful migration. Such decisions are modulated by a complex interplay between endogenous (physiological state) and external factors, such as weather (e. g. wind) and geography (ecological ba[...]
Article
Lenka Polacikova, Auteur ;
Mark E. Hauber, Auteur ;
Petr Procházka, Auteur ;
Phillip Cassey, Auteur ;
Marcel Honza, Auteur ;
Tomáš Grim, Auteur
The rejection of eggs of brood parasites in several species of hosts is based on cues only at the blunt pole (BP) and not at the sharp pole (SP) of the foreign and own eggshell. We investigated whether intraclutch variation is confined to a spec[...]
Article
Article
Frédéric Angelier, Auteur ;
Christopher M. Tonra, Auteur ;
Rebecca L. Holberton, Auteur ;
Peter P. Marra, Auteur
In migratory birds, environmental conditions during the stationary period of the non-breeding season are crucial to consider because they ultimately affect the fitness of individuals by influencing their subsequent migration, breeding success an[...]
