| Titre : | Journal of Avian Biology 49(4) - April 2018 |
| Type de document : | Bulletin |
| Paru le : | 01/04/2018 |
Dépouillements
Article
Bridget L. Campbell, Auteur ;
Laura L. Hurley, Auteur ;
Simon C. Griffith, Auteur
Successful reproduction in most avian species is dependent on the construction of a nest that provides protection and a suitable microclimate for the eggs and developing nestlings. Observational studies suggest that climatic variation may affect[...]
Article
Alyssa Borowske, Auteur ;
Christopher R. Field, Auteur ;
Katharine J. Ruskin, Auteur ;
Chris S. Elphick, Auteur
An individual's body condition and probability of survival can change throughout the annual cycle, based on the combined effects of many factors, including reproductive investment during breeding, colder temperatures during winter, and elevated [...]
Article
Pedro Diniz, Auteur ;
Edvaldo F. da Silva, Auteur ;
Michael S. Webster, Auteur ;
Regina H. Macedo, Auteur
Duetting is a collective behavior and might have multiple functions, including joint territory defense and mate guarding. An important step toward understanding the adaptive function of bird song is to determine if and how singing behavior varie[...]
Article
Much of the native grasslands in agricultural regions have been converted to cropland or tilled and seeded with non-native grasses for livestock production. Several grassland songbird species occupy planted grasslands, but occupancy or density m[...]
Article
Grazing pressure affects offspring sex ratio in a socially monogamous passerine on the Tibet Plateau
Shaobin Li, Auteur ;
Ruirui Shi, Auteur ;
Wei Li, Auteur ;
Guopan Li, Auteur
Livestock grazing can affect habitat structure and availability of arthropod prey for grassland birds, and ultimately determines habitat quality. The habitat quality may affect breeding strategies (e.g. sex ratio adjustment) in bird species, but[...]
Article
Matilde Alfaro, Auteur ;
Brett K. Sandercock, Auteur ;
Luciano Liguori, Auteur ;
Matias Arim, Auteur
Migratory shorebirds have some of the highest fat loads among birds, especially species which migrate long distances. The upland sandpiper Bartramia longicauda makes long-distance migrations twice a year, but variation in body condition or timin[...]
Article
Juan J. Negro, Auteur ;
Enrique Figueroa‐Luque, Auteur ;
Ismael Galvan, Auteur
Melanins are the most common pigments providing coloration in the plumage and bare skin of birds and other vertebrates. Numerous species are dichromatic in the adult or definitive plumage, but the direction of this type of sexual dichromatism (i[...]
Article
Flor Rodríguez‐Gómez, Auteur ;
Juan Francisco Ornelas, Auteur
Pleistocene climate cycles have been recognized to be a major driver of postglacial northward range expansion of North American bird populations. During glacial maxima, allopatric lineages that were reproductively isolated might have come into s[...]
Article
Marine Le Louarn, Auteur ;
Philippe Clergeau, Auteur ;
Diederik Strubbe, Auteur ;
Magali Deschamps‐Cottin, Auteur
Urbanisation as a major driver of changes leads to the extinction of some species while others increase in abundance, especially non-native species. Spatiotemporal distribution patterns of these successful species are likely to be shaped by thei[...]
