| Titre : | Journal of Field Ornithology 85(1) - MAR 2014 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
Craig A. Barnett, Auteur ;
Scott K. Sakaluk, Auteur ;
Charles F. Thompson, Auteur
Aggressive signals should predict whether the sender of the signal will attack the receiver, yet this criterion has been little studied. We conducted experiments with male House Wrens (Troglodytes aedon) in north-central Illinois in 2009 to test[...]
Article
Amanda Doyle, Auteur ;
Lynn Siefferman, Auteur
Although the condition-dependence and signaling function of ornamental plumage coloration among adult males is well studied, less research has focused on the information content of ornamental coloration among juvenile birds. Eastern Bluebird (Si[...]
Article
Ben Freeman, Auteur
Sex differences in foraging behavior have been widely reported in the ornithological literature, but few examples are available from tropical avifaunas. Differences between males and females in foraging behavior have been hypothesized to be a by[...]
Article
Mark C. Drever, Auteur ;
Moira J. F. Lemon, Auteur ;
Robert W. Butler, Auteur ;
Rhonda L. Millikin, Auteur
The Fraser River Delta in British Columbia, Canada, is a globally significant stopover site for shorebirds, but the population status and trends of many species that use the site remain uncertain. We describe an ongoing program to monitor popula[...]
Article
Ioana Chiver, Auteur ;
Bridget J. M. Stutchbury, Auteur ;
Eugene S. Morton, Auteur
Testosterone is important in mediating investment in competing activities such as territoriality, parental care, and maintenance behavior. Most studies of testosterone function have focused on temperate species and less is known about the role o[...]
Article
Ricardo C. Martins, Auteur ;
Teresa Catry, Auteur ;
José P. Granadeiro, Auteur
Capturing shorebirds during the non-breeding season can be challenging because they are usually scattered over wide-open intertidal areas while foraging and are sensitive to human disturbance at roosts where they gather during high tide in large[...]
Article
Paul L. Flint, Auteur ;
Brandt W. Meixell, Auteur ;
Edward J. Mallek, Auteur
High rates of site fidelity have been assumed to infer static distributions of molting geese in some cases. To test this assumption, we examined movements of individually marked birds to understand the underlying mechanisms of range expansion of[...]
Article
Tara E. Stehelin, Auteur ;
M. Ross Lein, Auteur
Hypotheses regarding dawn singing in birds remain largely unsupported by quantitative data, especially for suboscine passerines (suborder Tyranni). During a study of the singing behavior of a suboscine, the Dusky Flycatcher (Empidonax oberholser[...]
Article
Wouter M. G. Vansteelant, Auteur ;
Brecht Verhelst, Auteur ;
Judy Shamoun-Baranes, Auteur ;
Willem Bouten, Auteur ;
E. Emiel van Loon, Auteur ;
Keith L. Bildstein, Auteur
Every autumn, large numbers of raptors migrate through geographical convergence zones to avoid crossing large bodies of water. At coastal convergence zones, raptors may aggregate along coastlines because of convective or wind conditions. However[...]
Article
Article
Article
Rachel Muheim, Auteur ;
Ian Henshaw, Auteur ;
Sissel Sjoberg, Auteur ;
Mark E. Deutschlander, Auteur
Experimental research on the orientation of migratory songbirds is traditionally conducted using orientation funnels or automatic registration cages that record the directional activity of individual birds on paper or a computer. Most traditiona[...]
