| Titre : | Ibis : The International Journal of Avian Science 151(4) - OCT 2009 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
Adrian Surmacki, Auteur ;
Jakub Z. Kosicki, Auteur
Article
Myles H. M. Menz, Auteur ;
Lluis Brotons, Auteur ;
Raphaël Arlettaz, Auteur
The Ortolan Bunting Emberiza hortulana is a long-distance migrant that has suffered major population declines across much of its European breeding range. While northern populations are bound largely to farmland, Mediterranean populations are lar[...]
Article
Fabián Casas, Auteur ;
Francois Mougeot, Auteur ;
Javier Viñuela, Auteur
Double-nesting behaviour, a rare breeding system in which females lay in two nests, one incubated by herself and the other one by her mate, could be considered an intermediate stage in the evolutionary trend from biparental to uniparental care o[...]
Article
Murielle Mermod, Auteur ;
Thomas S. Reichlin, Auteur ;
Raphaël Arlettaz, Auteur ;
Michael Schaub, Auteur
The frequency of territory occupancy is a good indicator of territory quality. We studied territory occupancy in a Swiss population of the Wryneck Jynx torquilla, a declining farmland woodpecker, with the aim of identifying key habitat features [...]
Article
Francisco J. Buenestado, Auteur ;
Pablo Ferreras, Auteur ;
Jose A. Blanco-Aguiar, Auteur ;
Francisco S. Tortosa, Auteur ;
Rafael Villafuerte, Auteur
Knowledge of intrinsic and extrinsic factors associated with survival rates and the underlying causes of mortality is essential to understand both population dynamics and the causes of population declines. We studied the influence of habitat var[...]
Article
Rauri C. K. Bowie, Auteur ;
Jon Fjeldså, Auteur ;
Jacob Kiure, Auteur
Winifred's Warbler Scepomycter winifredae has a disjunct but very restricted distribution in the mountains of central Tanzania. It was once known only from the Uluguru Mountains. Subsequently, this rare warbler has been recorded from the Ukaguru[...]
Article
Norman Ratcliffe, Auteur ;
Ian Mitchell, Auteur ;
Karen Varnham, Auteur ;
Nanette Verboven, Auteur ;
Paul Higson, Auteur
Rats have been introduced to islands throughout the world. They have caused breeding failures, population declines and complete extirpation of vulnerable bird species. Such impacts can be difficult to diagnose in situations where extirpation occ[...]
Article
Phillip Cassey, Auteur ;
John G. Ewen, Auteur ;
N. Justin Marshall, Auteur ;
Misha Vorobyev, Auteur ;
Tim M. Blackburn, Auteur ;
Mark E. Hauber, Auteur
Diversity in the colour and appearance of avian eggshells has been proposed to serve a variety of visual functions, including crypsis from predation, mimicry and discrimination in facultative and obligate brood parasitism, and sexually selected [...]
Article
Ana C. Norte, Auteur ;
Pedro M. Araújo, Auteur ;
Hugo L. Sampaio, Auteur ;
Jose P. Sousa, Auteur ;
Jaime A. Ramos, Auteur
Blood parasites may act as modulators of their hosts' ecology, life histories and fitness. We studied the prevalence of Plasmodium sp., Haemoproteus sp. and Leucocytozoon sp. and their effects on morphological, biochemical and haematological var[...]
Article
Adam Kaliński, Auteur ;
Jaroslaw Wawrzyniak, Auteur ;
Miroslawa Banbura, Auteur ;
Joanna Skwarska, Auteur ;
Piotr Zieliński, Auteur ;
Jerzy Bańbura, Auteur
The physiological condition of nestling altricial birds depends on the quantity and quality of food delivered to them by parents. One indicator of the condition of Great Tit Parus major nestlings is the haemoglobin concentration in their blood. [...]
Article
George R. Young, Auteur ;
Alistair Dawson, Auteur ;
Ian Newton, Auteur ;
Lee Walker, Auteur
Differences between species in breeding seasons are thought to be mediated through differences in their reproductive physiology. Little is known about how the timing and duration of gonadal maturation varies between raptor species, how the timin[...]
Article
Volker Salewski, Auteur ;
Marc Kéry, Auteur ;
Marc Herremans, Auteur ;
Felix Liechti, Auteur ;
Lukas Jenni, Auteur
Fat is the prime energy source for birds during prolonged exercise, but protein is also catabolized. Estimates of the amount of catabolizable fat and protein (termed fat and protein fuel) are therefore important for studying energetics of birds.[...]
Article
Anonymous, Auteur
Article
Cristeta Brause, Auteur ;
Hagen Gasse, Auteur ;
Gerald Mayr, Auteur
In swifts and hummingbirds (Apodiformes), the splenius capitis muscle displays a characteristic modification, the 'cruciform origin'. The muscle pairs arise from the second vertebra by several slips which criss-cross and interdigitate with each [...]
Article
Jason Low, Auteur ;
Kevin C. Burns, Auteur ;
Mark E. Hauber, Auteur
Article
Margret I. Hatch, Auteur ;
Robert J. Smith, Auteur
Article
Laura Cardador, Auteur ;
Santi Mañosa, Auteur ;
Anna Varea, Auteur ;
Albert Bertolero, Auteur
