| Titre : | Journal of Avian Biology 40(6) - NOV 2009 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
Corine M. Eising, Auteur ;
Raquel Robles, Auteur ;
Maarten Lasthuizen, Auteur ;
Ton G. G. Groothuis, Auteur
Substantial amounts of maternal androgens are found in birds' eggs and have been shown to benefit offspring development. Within-clutch patterns of increasing androgen concentrations over the laying sequence are often hypothesized to compensate f[...]
Article
Andrew C. Rush, Auteur ;
Richard J. Cannings, Auteur ;
Darren E. Irwin, Auteur
Contact zones between recently diverged taxa offer unique opportunities to test whether the forms are reproductively isolated and therefore distinct species. The Pacific-slope flycatcher Empidonax difficilis and Cordilleran flycatcher Empidonax [...]
Article
Lynna M. Kiere, Auteur ;
Christopher M. Hofmann, Auteur ;
J. Jordan Price, Auteur ;
Thomas W. Cronin, Auteur ;
Kevin E. Omland, Auteur
Carotenoid-based colors have signaling roles in a range of animal taxa, yet little is known about how carotenoids vary across species or whether overall patterns may vary across genera. The caciques (Cacicus, Clypicterus and Ocyalus; family Icte[...]
Article
Danielle J. Whittaker, Auteur ;
Dustin G. Reichard, Auteur ;
Amy L. Dapper, Auteur ;
Ellen D. Ketterson, Auteur
Several studies have suggested a greater role for olfactory cues in avian social interactions than previously recognized, but few have explicitly investigated the effect of odor on parental behavior. We present results from a preliminary study i[...]
Article
Erin S. Morrison, Auteur ;
Daniel R. Ardia, Auteur ;
Ethan D. Clotfelter, Auteur
Innate immunity plays an important role in protecting birds early in development. The strength of innate immunity in nestlings appears to be affected by heritable and early maternal effects, as well as later environmental effects. To explore fac[...]
Article
Konrad Halupka, Auteur ;
Harold F. Greeney, Auteur
The Skutch hypothesis predicts that parental activity around the nest may attract the attention of predators and thus, in the tropics where predation pressure may be high, selection favors reduced parental activity. This hypothesis has been ques[...]
Article
Josue Martinez-De La Puente, Auteur ;
Santiago Merino, Auteur ;
Elisa Lobato, Auteur ;
Juan Rivero-de Aguilar, Auteur ;
Sara del Cerro, Auteur ;
Rafael Ruiz-De-Castañeda, Auteur ;
Juan Moreno, Auteur
Environmental factors may strongly affect avian-biting fly interactions in different ways because insects are heterothermic organisms that depend greatly on environmental variables to activate their metabolism and behaviour. We studied the effec[...]
Article
Mark Stanback, Auteur ;
Austin Mercadante, Auteur ;
Wesley Anderson, Auteur ;
Howell Burke, Auteur ;
Rebecca Jameson, Auteur
Nest boxes provide sheltered nesting sites for both passerines and paper wasps. Although neither wasps nor birds appear to evict the other once one is fully established, it is unclear which is the dominant competitor at the onset of the breeding[...]
Article
Julia Delingat, Auteur ;
Volker Dierschke, Auteur ;
Heiko Schmaljohann, Auteur ;
Franz Bairlein, Auteur
In migrating birds body mass change during stopover is often used to evaluate the quality of a stopover site. Because such body mass changes are difficult to survey in migrating birds various methods were developed to allow the analysis of large[...]
Article
Sara S. Henningsson, Auteur ;
Håkan Karlsson, Auteur
Many northerly breeding shorebird species show a separation in timing of adult and juvenile migration. If, in addition to genetic control of migration, learning from experienced conspecifics is advantageous, juveniles should join adult birds dur[...]
Article
Christophe Barbraud, Auteur ;
Jean-Baptiste Thiebot, Auteur
The primary and accepted method used to estimate seabird densities at sea from ships is the strip transect method, designed to correct for the effect of random directional bird movement relative to that of the ship. However, this method relies o[...]
Article
Janette A. Norman, Auteur ;
Walter E. Boles, Auteur ;
Les Christidis, Auteur
The New Guinean songbird fauna contains numerous enigmatic species and genera whose phylogenetic affinities have been difficult to resolve. Two such genera are ditypic Amalocichla and monotypic Pachycare. Here we obtained DNA sequences of two nu[...]
Article
Marina Anciães, Auteur ;
A. Townsend Peterson, Auteur
Study of the evolution of ecological characteristics using phylogenetic information is only beginning, but several new tools and approaches open fascinating possibilities. The Pipridae is a diverse and well-known family of frugivorous birds that[...]
