| Titre : | Journal of Avian Biology 35(6) - NOV 2004 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
E. Kalmbach, Auteur ;
R. Griffiths, Auteur ;
J. E. Crane, Auteur ;
R. W. Furness, Auteur
We investigated the effects of increased egg production on body condition as well as on measures of reproductive performance in great skuas, Stercorarius skua, over two subsequent years. We experimentally increased egg production from the normal[...]
Article
N. Agostini, Auteur
Article
A. Roulin, Auteur ;
W. Müller, Auteur ;
L. Sasvari, Auteur ;
C. Dijkstra, Auteur ;
A. L. Ducrest, Auteur ;
Christian Riols, Auteur ;
M. Wink, Auteur ;
T. Lubjuhn, Auteur
In many bird populations, individuals display one of several genetically inherited colour morphs. Colour polymorphism can be maintained by several mechanisms one of which being frequency-dependent selection with colour morphs signalling alternat[...]
Article
L. R. Nagy, Auteur ;
R. T. Holmes, Auteur
Nest predation often is reported to be the major cause of nest failure in birds and by extension the predominant influence on annual fecundity. However, other factors such as the ability of some individuals to renest after a failed nest or to la[...]
Article
Article
S. A. Shaffer, Auteur ;
D. P. Costa, Auteur ;
H. Weimerskirch, Auteur
Field metabolic rates (FMR) and activity patterns of black-browed albatrosses Thalassarche melanophrys were measured while at sea and on nest during the incubation stage at Kerguelen Island, southwestern Indian Ocean. Activity-specific metabolic[...]
Article
A. Charmantier, Auteur ;
Jacques Blondel, Auteur ;
P. Perret, Auteur ;
M. M. Lambrechts, Auteur
A large body of theories on extra-pair paternity (EPP) in birds has proposed four main "genetic" hypotheses to explain this behaviour: the "good genes" hypothesis, the genetic diversity hypothesis, the genetic compatibility hypothesis and the fe[...]
Article
K. J. McGraw, Auteur ;
K. Wakamatsu, Auteur ;
A. B. Clark, Auteur ;
K. Yasukawa, Auteur
Over the past three decades, the red-winged blackbird Agelaius phoeniceus has served as a model species for studies of sexual selection and the evolution of ornamental traits. Particular attention has been paid to the role of the colorful red-an[...]
Article
W. C. Turner, Auteur ;
C. A. Barber, Auteur
We tested the fertility announcement hypothesis, whereby male song during a female's fertile period functions as both a paternity guard and an advertisement for extra-pair copulations, in an eastern population of song sparrows Melospiza melodia [...]
Article
Y. Zharikov, Auteur ;
G. A. Skilleter, Auteur
Eastern curlews Numenius madagascariensis spending the nonbreeding season in eastern Australia foraged on three intertidal decapods: soldier crab Mictyris longicarpus, sentinel crab Macrophthalmus crassipes and ghost-shrimp Trypaea australiensis[...]
Article
D. J. Mennill, Auteur ;
L. M. Ratcliffe, Auteur
Birds that nest in cavities may regulate nest microclimate by orienting their nest entrance relative to the sun or prevailing winds. Alternatively, birds may orient their nest entrance relative to conspecific individuals around them, especially [...]
Article
K. Weidinger, Auteur
Large nests may incur Fitness cost in terms of conspicuousness to predators, but the effect of nest size on predation risk can be confounded by effects of nest site and parental characteristics. I examined relative effects of nest size and place[...]
Article
K. J. McGraw, Auteur
For decades, carotenoids have attracted attention for their roles as vitamin-A precursors, antioxidants, and immunostimulants, but we still understand very little about the metabolic processes that accompany these compounds. Animals like birds u[...]
