| Titre : | Journal of Animal Ecology 74(1) - JAN 2005 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
D. A. Williams, Auteur ;
K. N. Rabenold, Auteur
1. Dispersal in many species is sex-biased. Greenwood (1980, Animal Behaviour, 28, 1140-1162) hypothesized that the direction of sex bias was dependent on the mating system, and suggested that female-biased dispersal in birds is associated with [...]
Article
J. J. Barg, Auteur ;
J. Jones, Auteur ;
R. J. Robertson, Auteur
1. The goals of this study were to investigate the possibility of using kernel techniques to estimate male breeding territory size and delineate core areas, focusing on a small nontransmitter bearing bird, the cerulean warbler. We then compared [...]
Article
H. Schmaljohann, Auteur ;
V. Dierschke, Auteur
1. Experiments testing predictions of optimal migration theory so far have concentrated on time and energy as the expenses that birds strive to minimize during migration. Taking advantage of the high variation in numbers of migrating raptors ove[...]
Article
J. A. Van Gils, Auteur ;
A. Dekinga, Auteur ;
B. Spaans, Auteur ;
W. K. Vahl, Auteur ;
T. Piersma, Auteur
1. When prey occur at high densities, energy assimilation rates are generally constrained by rates of digestion rather than by rates of collection (i.e. search and handle). As predators usually select patches containing high prey densities, rate[...]
