| Titre : | Journal of Avian Biology 44(1) - JAN 2013 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
Alexandra B. Bentz, Auteur ;
Lynn Siefferman, Auteur
Males of many bird species exhibit delayed plumage maturation (DPM), a condition in which young individuals display an immature plumage. Several adaptive hypotheses have been suggested for the signaling utility of DPM in males. Tree swallows Tac[...]
Article
J. Roberto Sosa-Lopez, Auteur ;
Daniel J. Mennill, Auteur ;
Adolfo G. Navarro-Sigueenza, Auteur
Speciation may be influenced by geographic variation in animal signals, particularly when those signals are important in reproductive decisions. Here, we describe patterns of geographic variation in the song of rufous-naped wrens Campylorhynchus[...]
Article
Ian R. K. Stewart, Auteur ;
David F. Westneat, Auteur
Hatching failure is widespread in birds despite presumably strong selection against any wasted reproductive effort and yet there have been few attempts at uncovering sources of variation in failure within a species. Here we use 11 yr of data on [...]
Article
Karel Weidinger, Auteur ;
Václav Pavel, Auteur
Antarctic terns have to co-exist in a limited space with their major nest predator, the skuas. We conducted artificial nest experiments to evaluate the roles of parental activity, nest location and nest and egg crypsis in this simple predatorpre[...]
Article
Jessica Meade, Auteur ;
Ben J. Hatchwell, Auteur ;
Julia L. Blanchard, Auteur ;
Tim R. Birkhead, Auteur
The population of common guillemots Uria aalge on Skomer Island, Wales has been monitored since 1963, and in the last 30 yr has increased at an almost constant rate of 5% yr-1. A previous attempt to model the population based on intrinsic demogr[...]
Article
Dariusz Jakubas, Auteur ;
Katarzyna Wojczulanis-Jakubas, Auteur
Most seabirds have a small clutch size. Thus, replacement of a clutch after loss can make important contributions to an individuals lifetime reproductive success. However, in the condition of short polar summer, relaying propensity may be time-c[...]
Article
J. N. Amos, Auteur ;
S. Balasubramaniam, Auteur ;
L. Grootendorst, Auteur ;
K. A. Harrisson, Auteur ;
A. Lill, Auteur ;
R. Mac Nally, Auteur ;
A. Pavlova, Auteur ;
J. Q. Radford, Auteur ;
N. Takeuchi, Auteur ;
J. R. Thomson, Auteur ;
P. Sunnucks, Auteur
Habitat loss, fragmentation and degradation are drivers of major declines in biodiversity and species extinctions. The actual causes of species population declines following habitat change are more difficult to discern and there is typically hig[...]
Article
Staffan Jacob, Auteur ;
Philipp Heeb, Auteur
Offspring solicit food from their parents through begging signals. Nestling skin and flange coloration are begging signals that appear to convey information about nestling need or condition, and several experiments have shown that modifications [...]
Article
Tobias Limbourg, Auteur ;
A. Christa Mateman, Auteur ;
C. M. Lessells, Auteur
Parental investment and sexually-selected signals can be intimately related, either because the signals indicate the amount of investment that an individual is prepared to make, and hence its value as a mate (the good parent process), or because[...]
Article
Rachel D. Field, Auteur ;
John D. Reynolds, Auteur
We compared scavenging bird abundance and diversity across 17 estuaries on the Central Coast of British Columbia, Canada in relation to landscape characteristics and biomass of spawning salmon and senescent and depredated salmon carcasses. We di[...]
Article
Anthony D. Fox, Auteur ;
Roy King, Auteur ;
Myrfyn Owen, Auteur
Captured free-living male mallard Anas platyrhynchos at Abberton in southern Britain showed peak mass gain immediately prior to simultaneous remex moult. Individuals of both sexes were heavier before shedding wing feathers than when flightless c[...]
