| Titre : | Journal of Avian Biology 44(6) - NOV 2013 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
Jennifer F. Provencher, Auteur ;
Kyle H. Elliott, Auteur ;
Anthony J. Gaston, Auteur ;
Birgit M. Braune, Auteur
Generalist predator populations are sometimes made up of individuals that specialize on particular prey items. To examine specialization in thick-billed murres Uria lomvia during self-feeding we obtained stomach contents and muscle stable isotop[...]
Article
Julia Sommerfeld, Auteur ;
Akiko Kato, Auteur ;
Yan Ropert-Coudert, Auteur ;
Stefan Garthe, Auteur ;
Mark A. Hindell, Auteur
Understanding how animals allocate their foraging time is a central question in behavioural ecology. Intrinsic factors, such as body mass and size differences between sexes or species, influence animals' foraging behaviour, but studies investiga[...]
Article
Diego Santiago-Alarcon, Auteur ;
Raeann Mettler, Auteur ;
Gernot Segelbacher, Auteur ;
H. Martin Schaefer, Auteur
Parasites can exert strong selection on hosts. Throughout the year migrants are exposed to different sets of parasites, which may affect life history traits such as migratory schedules. Here, we studied the relationship between parasite infectio[...]
Article
Cas Eikenaar, Auteur ;
Frances Bonier, Auteur ;
Paul R. Martin, Auteur ;
Ignacio T. Moore, Auteur
The latitudinal increase in extra-pair paternity (EPP) rates in birds suggests broad selective benefits to low EPP rates in the tropics. However, we have few EPP data from tropical birds, particularly from species with close relatives at high la[...]
Article
Charlotte Recapet, Auteur ;
Lise Dauphin, Auteur ;
Lisa Jacquin, Auteur ;
Julien Gasparini, Auteur ;
Anne-Caroline Prevot-Julliard, Auteur
Urbanisation introduces deep changes in habitats, eventually creating new urban ecosystems where ecological functions are driven by human activities. The higher frequency of some phenotypes in urban vs rural/wild areas has led to the assumption [...]
Article
Keith W. Larson, Auteur ;
Miriam Liedvogel, Auteur ;
Staffan Bensch, Auteur ;
Susanne Åkesson, Auteur ;
Leonard I. Wassenaar, Auteur ;
Keith A. Hobson, Auteur
We present a comparison of feather stable isotope (C-13, N-15) patterns representing the habitat and diet conditions for two subspecies of willow warblers Phylloscopus trochilus that breed in parapatry, but winter in different regions of sub-Sah[...]
Article
Kentaro Kazama, Auteur ;
Kazuhiko Hirata, Auteur ;
Takashi Yamamoto, Auteur ;
Hiroshi Hashimoto, Auteur ;
Akinori Takahashi, Auteur ;
Yasuaki Niizuma, Auteur ;
Philip N. Trathan, Auteur ;
Yutaka Watanuki, Auteur
Long-lived animals sometimes skip one or more breeding seasons; however, little is known about their movements and activities during such sabbatical' periods. Here we present novel data on year-round movements and activities of two male black-ta[...]
Article
Petr Procházka, Auteur ;
Steven L. Van Wilgenburg, Auteur ;
Julio M. Neto, Auteur ;
Reuven Yosef, Auteur ;
Keith A. Hobson, Auteur
Despite recent advances in technology, it remains difficult to connect breeding and non-breeding areas of populations of migratory organisms due to the challenges of year-round tracking. Here, we used the Eurasian reed warbler Acrocephalus scirp[...]
Article
Jeffrey M. Warren, Auteur ;
Kyle A. Cutting, Auteur ;
David N. Koons, Auteur
Pre-breeding body condition is an important determinant of reproductive success in birds, largely through its influence on timing of breeding. Declines in clutch size and recruitment probability within breeding seasons indicate a tradeoff may ex[...]
Article
Tess L. Killpack, Auteur ;
Yushi Oguchi, Auteur ;
William H. Karasov, Auteur
Innate immune functions are proposed to develop rapidly post-hatch in altricial nestlings, compared with adaptive immune defenses that require development of receptor specificity and memory. Studies of ontogenetic changes in altricial birds have[...]
Article
Philipp Sprau, Auteur ;
Tobias Roth, Auteur ;
Valentin Amrhein, Auteur ;
Marc Naguib, Auteur
In animal communication, elaborate signals have been shown to be under sexual selection and often to reliably indicate a signaler's quality, condition, or motivation. For instance, the performance of physically challenging signals such as trills[...]
Article
Behavioural responses to ectoparasites in pied flycatchers Ficedula hypoleuca: an experimental study
Alejandro Cantarero, Auteur ;
Jimena Lopez-Arrabe, Auteur ;
Alberto J. Redondo, Auteur ;
Juan Moreno, Auteur
Nests of cavity-nesting birds usually harbor some species of haematophagous ectoparasites that feed on the incubating adults and nestlings. Given the negative impact of ectoparasites on nestlings there will be selection on hosts to reduce parasi[...]
