| Titre : | Journal of Avian Biology 41(6) - NOV 2010 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
Ulf Bauchinger, Auteur ;
Scott R. McWilliams, Auteur
Phenotypic flexibility in organ size of migratory birds is typically explained in functional terms in accordance with the principal of economic design. However, proposed functional hypotheses do not adequately explain differences in phenotypic f[...]
Article
Pilar Benites, Auteur ;
Muir D. Eaton, Auteur ;
Dario A. Lijtmaer, Auteur ;
Stephen C. Lougheed, Auteur ;
Pablo L. Tubaro, Auteur
Females of the closely related capuchino seedeaters are difficult to distinguish from one another based on human visual perception of colouration and morphology. We examined plumage colour differences among females of four species, the tawny-bel[...]
Article
Mathieu Giraudeau, Auteur ;
Gábor Á. Czirják, Auteur ;
Camille Duval, Auteur ;
Claude Guiterrez, Auteur ;
Vincent Bretagnolle, Auteur ;
Philipp Heeb, Auteur
Feathers play an important role in many aspects of avian life histories, for exampling acting in thermoregulation, communication and flight. Damaged feathers may reduce the ability to perform these functions, so there are likely fitness costs fo[...]
Article
Antti Paasivaara, Auteur ;
Jarkko Rutila, Auteur ;
Hannu Poysa, Auteur ;
Pentti Runko, Auteur
Conspecific brood parasitism (CBP) is an important alternative breeding strategy for gaining reproductive output in birds. While interactions between hosts and parasites and consequences of CBP to breeding success of both parties have been studi[...]
Article
Péter L. Pap, Auteur ;
Csongor I. Vágási, Auteur ;
Gergely Osvath, Auteur ;
Cosmin Muresan, Auteur ;
Zoltán Barta, Auteur
The seasonal change, i.e. the marked differences between seasons of low and high productivity, in the abundance of ectosymbionts and the defence intensity of the host against pathogens is a well defined characteristic of temperate zone organisms[...]
Article
Cedric Zimmer, Auteur ;
Mathieu Boos, Auteur ;
Odile Petit, Auteur ;
Jean-Patrice Robin, Auteur
For passerines the starvation-predation risk theory predicts that birds should decrease their body mass to improve escape flight performance, when predation pressure increases. To investigate whether this theory may apply to large birds, which m[...]
Article
Iván De la Hera, Auteur ;
Javier Pérez-Tris, Auteur ;
José Luis Tellería, Auteur
Moult is a costly but necessary process in avian life, which displays two main temporal patterns within the annual cycle of birds (summer and winter moult). Timing of moult can affect its duration and consequently the amount of material invested[...]
Article
Nichola J. Raihani, Auteur ;
Martha J. Nelson-Flower, Auteur ;
Krystyna A. Golabek, Auteur ;
Amanda R. Ridley, Auteur
In cooperatively breeding and other family living species, there are often more individuals of reproductive age than available breeding positions. Asking how individuals attain reproductive status is therefore crucial if we are to understand the[...]
Article
Michael U. Kemp, Auteur ;
Judy Shamoun-Baranes, Auteur ;
Hans van Gasteren, Auteur ;
Willem Bouten, Auteur ;
E. Emiel van Loon, Auteur
A bird's ground speed is influenced by the wind conditions it encounters. Wind conditions, although variable, are not entirely random. Instead, wind exhibits persistent spatial and temporal dynamics described by the general circulation of the at[...]
Article
Sandra Bouwhuis, Auteur ;
Arie J. van Noordwijk, Auteur ;
Ben C. Sheldon, Auteur ;
Simon Verhulst, Auteur ;
Marcel E. Visser, Auteur
The process of ageing was long thought to be too infrequent to affect life-histories in natural populations. Long-term studies have, however, recently demonstrated ageing to be ubiquitous even in the wild, although confounding factors, such as e[...]
Article
Rebecca J. Laws, Auteur ;
Sheena M. Townsend, Auteur ;
Shinichi Nakagawa, Auteur ;
Ian G. Jamieson, Auteur
Inbreeding depression is known to vary greatly between populations and among species. Some of this variation is due to differences in genetic load between populations, while some is due to differences in the environment (e.g. local weather condi[...]
Article
Aleksi Lehikoinen, Auteur ;
Pertti Saurola, Auteur ;
Patrik Byholm, Auteur ;
Andreas Linden, Auteur ;
Jari Valkama, Auteur
Current climate change has been found to advance spring arrival and breeding dates of birds, but the effects on autumn migration and possible responses in the distribution of wintering individuals are poorly known. To thoroughly understand the c[...]
Article
Nils Warnock, Auteur
Places where migrant birds stop to rest, drink, and eat at are often described as either stopover or staging sites. Attempts have been made to differentiate between these two terms but they are frequently used interchangeably. Some authors have [...]
