| Titre : | Journal of Avian Biology 45(4) - JUL 2014 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
Ingrid L. Pollet, Auteur ;
Robert A. Ronconi, Auteur ;
Ian D. Jonsen, Auteur ;
Marty L. Leonard, Auteur ;
Philip D. Taylor, Auteur ;
Dave Shutler, Auteur
Knowledge of foraging movements during the breeding season is key to understanding energetic stresses faced by seabirds. Using archival light loggers (geolocators), a Bayesian state-space model, and stable isotope analysis, we compared foraging [...]
Article
Susana I. Peluc, Auteur ;
Wendy L. Reed, Auteur ;
Penelope Gibbs, Auteur ;
Kevin J. McGraw, Auteur
Maternal resources deposited in eggs can affect the development of several off spring phenotypic traits and result in trade-offs among them. For example, maternal androgens in eggs may be beneficial to off spring growth and competitive ability, [...]
Article
Juan Diego Ibanez-Alamo, Auteur ;
Magdalena Ruiz-Rodríguez, Auteur ;
Juan Jose Soler, Auteur
Nestlings of many bird species produce fecal sacs, excrements encapsulated within a mucous covering. Although it facilitates parents' removal of feces from nests, which would improve hygienic conditions for developing nestlings, no functional (i[...]
Article
Libby C. Megna, Auteur ;
Andre E. Moncrieff, Auteur ;
James L. Hayward, Auteur ;
Shandelle M. Henson, Auteur
Glaucous-winged gulls Larus glaucescens and western gulls L. occidentalis hybridize extensively where their ranges overlap along the coasts of Washington and Oregon, producing a continuum of phenotypic intergrades between the two parental specie[...]
Article
Francisco Santiago-Quesada, Auteur ;
Sora M. Estrella, Auteur ;
Juan M. Sánchez-Guzmán, Auteur ;
José A. Masero, Auteur
Many migratory water birds are known to feed both during day and night outside the breeding season, but the underlying factors and mechanisms determining this foraging pattern are poorly understood. We addressed this topic by comparing both diur[...]
Article
Spencer C. Galen, Auteur ;
Christopher C. Witt, Auteur
Recent research has revealed well over 1000 mtDNA lineages of avian haemosporidian parasites, but the extent to which this diversity is caused by host-parasite coevolutionary history or environmental heterogeneity is unclear. We surveyed haemosp[...]
Article
Suzanne H. Austin, Auteur ;
Michaela Hau, Auteur ;
W. Douglas Robinson, Auteur
Time required for avian embryos to develop is influenced by incubation temperature and the amount of time adults incubate eggs. Experiments on poultry indicate that photoacceleration, the light-induced stimulation of embryonic development, decre[...]
Article
Jose J. Cuervo, Auteur ;
Rosa M. de Ayala, Auteur
Some studies have suggested that tail streamers in the barn swallow Hirundo rustica may have been elongated 10-12 mm by sexual selection, but according to other studies, the length of these feathers is at the aerodynamic optimum or very close to[...]
Article
Brett A. DeGregorio, Auteur ;
Scott J. Chiavacci, Auteur ;
Patrick J. Weatherhead, Auteur ;
John D. Willson, Auteur ;
Thomas J. Benson, Auteur ;
Jinelle H. Sperry, Auteur
Predation is the leading cause of nest failure for most birds. Thus, for ornithologists interested in the causes and consequences of variation in nest success, knowing the identity and understanding the behavior of dominant nest predators is lik[...]
Article
Petra Quillfeldt, Auteur ;
Richard A. Phillips, Auteur ;
Melanie Marx, Auteur ;
Juan F. Masello, Auteur
Procellariiform seabirds have extreme life histories; they are very long-lived, first breed when relatively old, lay single egg clutches, both incubation and chick-rearing are prolonged and chicks exhibit slow growth. The early part of the breed[...]
Article
Rosemarie Kentie, Auteur ;
Christiaan Both, Auteur ;
Jos C. E. W. Hooijmeijer, Auteur ;
Theunis Piersma, Auteur
Whether to disperse, and where to, are two of the most prominent decisions in an individual's life, with major consequences for reproductive success. We studied natal and breeding dispersal in the monogamous black-tailed godwit Limosa limosa lim[...]
Article
Bradley K. Woodworth, Auteur ;
Charles M. Francis, Auteur ;
Philip D. Taylor, Auteur
Inland dispersal of migrating land birds away from the coast, often opposite to the direction of migration, occurs frequently. Many of these movements may involve migrants seeking improved stopover conditions farther inland, but direct study of [...]
Article
H. Holand, Auteur ;
H. Jensen, Auteur ;
J. Tufto, Auteur ;
M. Soliman, Auteur ;
H. Paern, Auteur ;
B.-E. Saether, Auteur ;
T. H. Ringsby, Auteur
The effect of parasites in natural populations has received increasing attention in recent years. Studies have shown that parasites may play an important part in population ecology due to their potential effects on host fitness. The main purpose[...]
