| Titre : | Journal of Avian Biology 44(4) - JUL 2013 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
Gaute Gronstol, Auteur ;
Jo Esten Hafsmo, Auteur ;
Ingvar Byrkjedal, Auteur ;
Terje Lislevand, Auteur
The polygyny threshold model predicts that monogamous and secondary females on average settle at the same time and have similar reproductive success. This is not generally found. Incorporating varying female competitive strength into the model, [...]
Article
Ondrej Stovicek, Auteur ;
Jakub Kreisinger, Auteur ;
Veronika Javurkova, Auteur ;
Tomáš Albrecht, Auteur
Conspecific brood parasitism (CBP) is a reproductive tactic whereby a parasitic female lays its eggs into the nests of other conspecific females. Genetic-based data on the occurrence of CBP in birds, however, is still relatively scarce. We analy[...]
Article
Amélie N. Dreiss, Auteur ;
Marco Calcagno, Auteur ;
Valentijn Van Den Brink, Auteur ;
Aurelie Laurent, Auteur ;
Bettina Almasi, Auteur ;
Lukas Jenni, Auteur ;
Alexandre Roulin, Auteur
The conflict between siblings over how parental resources are divided has promoted the evolution of specific behaviour to outcompete each other. Young animals look out for parents' arrival in order to start begging as quickly as possible, since [...]
Article
Suvi Ruuskanen, Auteur ;
Toni Laaksonen, Auteur
The hormonal environment during early development, such as maternally derived androgens in bird eggs, has been shown to shape offspring in ways that may have important short- and long-term consequences for phenotype and behavior. However, studie[...]
Article
Anna Drake, Auteur ;
Christine Rock, Auteur ;
Sam P. Quinlan, Auteur ;
David J. Green, Auteur
We use stable isotope data to investigate the role of winter habitat use in altering the breeding phenology of yellow warblers Setophaga petechia. We first confirm that C-13 and N-15 isotopic signatures vary with winter habitat use in this speci[...]
Article
Sara Lerch-Henning, Auteur ;
Susan W. Nicolson, Auteur
Although the function of nectar is to attract and reward pollinators, secondary metabolites produced by plants as anti-herbivore defences are frequently present in floral nectars. Greater understanding is needed of the effects of secondary metab[...]
Article
Rebecca L. Windsor, Auteur ;
Jessica L. Fegely, Auteur ;
Daniel R. Ardia, Auteur
The nest environment can have important influences on incubation behavior and nestling development in birds. Nest thermal properties, particularly nest composition and size, can have a major influence on heat loss. To examine the role of nest si[...]
Article
Raoul F. H. Ribot, Auteur ;
Mathew L. Berg, Auteur ;
Katherine L. Buchanan, Auteur ;
Andrew T. D. Bennett, Auteur
Learned vocal signals could be important in the formation of prezygotic isolation between two hybridising taxa. This study examined whether vocal variation in the parrot Platycercus elegans facilitates the separation of individuals from two subs[...]
Article
Matt J. Wood, Auteur ;
Dylan Z. Childs, Auteur ;
Alicia S. Davies, Auteur ;
Olof Hellgren, Auteur ;
Charlie K. Cornwallis, Auteur ;
Chris M. Perrins, Auteur ;
Ben C. Sheldon, Auteur
Quantifying the factors that predict parasite outbreak and persistence is a major challenge for both applied and fundamental biology. Key to understanding parasite prevalence and disease outbreaks is determining at what age individuals show sign[...]
Article
Víctor R. Cueto, Auteur ;
Fernando A. Milesi, Auteur ;
Luis Marone, Auteur
We assessed experimentally if the main granivorous bird species that feed on the ground in the central Monte desert are able to detect and consume seeds buried in the soil or trapped within litter. Understanding seed vulnerability to birds allow[...]
Article
A. E. Kessler, Auteur ;
N. Batbayar, Auteur ;
T. Natsagdorj, Auteur ;
D. Batsuur', Auteur ;
A. T. Smith, Auteur
The range of the great bustard stretches 10 000 km across Eurasia, one of the largest ranges of any threatened species. While movement patterns of the western subspecies of great bustard are relatively well-understood, this is the first research[...]
Article
Maria Cristina Carmona-Isunza, Auteur ;
Alejandra Nunez-de la Mora, Auteur ;
Hugh Drummond, Auteur
Experiments on birds, fish and mammals have shown that adverse conditions during infancy can produce diverse long-term and delayed deficits during adulthood, prejudicing both the individual and its offspring. Natural selection should prepare ani[...]
Article
Ewa Węgrzyn, Auteur
Nestling development is among the most energy-demanding periods of a bird's lifetime and altricial species require extensive parental energy investment in the form of feeding and heating. In the present study I analyze the relation and trade-off[...]
