| Titre : | Journal of Avian Biology 40(2) - MAR 2009 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
Sarah Kiefer, Auteur ;
Christina Sommer, Auteur ;
Constance Scharff, Auteur ;
Silke Kipper, Auteur ;
Roger Mundry, Auteur
In many oscines, song repertoire size correlates with male quality and female mate choice, and can vary with age. In a cross-sectional field study in common nightingales Luscinia megarhynchos, one y old birds had substantially smaller repertoire[...]
Article
Michelle L. Hall, Auteur ;
Laura E. Molles, Auteur ;
Anya E. Illes, Auteur ;
Sandra L. Vehrencamp, Auteur
Investment in signalling is subject to multiple trade-offs that vary with life-stage, leading to a complex relationship between survival and trait expression. We show a negative relationship between survival and song rate in response to simulate[...]
Article
Jeffrey M. DaCosta, Auteur ;
Garth M. Spellman, Auteur ;
Patricia Escalante, Auteur ;
John Klicka, Auteur
The emberizid genera Aimophila and Pipilo represent longstanding taxonomic conundrums. Each is comprised of sub-clades whose members appear to share diagnostic morphological and behavioral characters; however, relationships among sub-clades with[...]
Article
Manuel Martin-Vivaldi, Auteur ;
Magdalena Ruiz-Rodríguez, Auteur ;
Juan Jose Soler, Auteur ;
Juan Manuel Peralta-Sanchez, Auteur ;
María Méndez, Auteur ;
Eva Valdivia, Auteur ;
Antonio Manuel Martin-Platero, Auteur ;
Manuel Martinez-Bueno, Auteur
The uropygial glands of birds serve multiple functions, and there is great interspecific variability in the composition and properties of their secretions. A special case is the secretion in the hoopoes Upupa epops, and green woodhoopoes Phoenic[...]
Article
Bailey D. McKay, Auteur
Molecular tools are reshaping many traditional paradigms concerning the timeframe of avian diversification in North America. Phylogeographic studies have become essential for guiding the emerging paradigms. However, the current pool of such stud[...]
Article
Ana Claudia Norte, Auteur ;
Ben C. Sheldon, Auteur ;
Jose P. Sousa, Auteur ;
Jaime A. Ramos, Auteur
Health state parameters in natural populations can be used as bioindicators of environmental health if they respond to environmental cues. We studied to which extent health state parameters (morphological, biochemical, and haematological) were d[...]
Article
Elizabeth Yohannes, Auteur ;
Herbert Biebach, Auteur ;
Gerhard Nikolaus, Auteur ;
David J. Pearson, Auteur
Based on phenology, passage and median dates gathered from large number of study sites, we measured autumn and spring migration speeds of eleven long distance migratory passerines in four different ecogeographic sectors: Europe, desert, north-ea[...]
Article
Natalia Pitala, Auteur ;
Suvi Ruuskanen, Auteur ;
Toni Laaksonen, Auteur ;
Blandine Doligez, Auteur ;
Barbara Tschirren, Auteur ;
Lars Gustafsson, Auteur
Hormone-mediated maternal effects may be an important mechanism for adjusting offspring phenotype to particular requirements of the environment. We manipulated the levels of testosterone and androstenedione in the yolk of collared flycatcher Fic[...]
Article
Billy Nguembock, Auteur ;
Alice Cibois, Auteur ;
Rauri C. K. Bowie, Auteur ;
Corinne Cruaud, Auteur ;
Eric Pasquet, Auteur
African jungle babblers or illadopsises, genus Illadopsis Heine, 1859, are small shy babblers which occupy the undergrowth of African humid forest habitats. The taxonomy of Illadopsis as well as its biogeography are currently poorly known becaus[...]
Article
Susan L. Balenger, Auteur ;
L. Scott Johnson, Auteur ;
Herman L. Mays, Auteur ;
Brian S. Masters, Auteur
Sexual selection theory posits that ornamental traits can evolve if they provide individuals with an advantage in securing multiple mates. That male ornamentation occurs in many bird species in which males pair with a single female is therefore [...]
Article
Anthony D. Fox, Auteur ;
Keith A. Hobson, Auteur ;
Johnny Kahlert, Auteur
Feather stable isotope composition may not reflect local isoscapes in which they were grown if supplemented with protein of endogenous origin. Thus, feather isotope analysis, combined with knowledge of local isoscapes can be used to infer endoge[...]
Article
Karen L. Wiebe, Auteur
It has been hypothesized that it is adaptive for birds to build new nests annually in order to avoid the accumulation of ectoparasites. Previous studies on costs of ectoparasitism have focused on cavity nesters in nestboxes while largely ignorin[...]
Article
Simon C. Griffith, Auteur ;
Simone Immler, Auteur
Despite two decades of research into over one hundred species, the function of extrapair paternity to female birds remains unclear. Recent studies have demonstrated patterns between extrapair paternity and the genetic similarity of females with [...]
Article
Stéphanie M. Doucet, Auteur ;
Geoffrey E. Hill, Auteur
Museum specimens continue to be an invaluable resource for taxonomic, systematic, and comparative studies, and are increasingly relied upon for novel research purposes. Evaluating variation in the colour of avian study skins forms the basis for [...]
Article
Teddy A. Wilkin, Auteur ;
Lucy E. King, Auteur ;
Ben C. Sheldon, Auteur
Variation in early nutrition is often a strong predictor of offspring condition and fitness. In the case of woodland passerine birds, nestling diet is determined by the spatiotemporal distribution of prey items such as caterpillars during the ne[...]
Article
Marten B. Hjernquist, Auteur ;
Thor Veen, Auteur ;
Laura Font, Auteur ;
Marcel Klaassen, Auteur
For migrants, we often lack complete information of their spatial distribution year round. Here, we used stable carbon, nitrogen and hydrogen isotope ratios extracted from feathers grown at the wintering sites of the long-distance migratory coll[...]
