| Titre : | Ibis : The International Journal of Avian Science 156(2) - APR 2014 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
Antje Girndt, Auteur ;
Ulrich Knief, Auteur ;
Wolfgang Forstmeier, Auteur ;
Bart Kempenaers, Auteur
Here we report the first discovery of two viable triploid male Zebra Finches Taeniopygia guttata. We compared the morphology of their sperm with that of normal diploid Zebra Finches and examined eggs resulting from a triploid male and diploid fe[...]
Article
Agnes Lewden, Auteur ;
Magali Petit, Auteur ;
Myriam Milbergue, Auteur ;
Stephane Orio, Auteur ;
François Vézina, Auteur
The use of hypothermia as a means to save energy is well documented in birds. This energy-saving strategy is widely considered to occur exclusively at night in diurnally active species. However, recent studies suggest that facultative hypothermi[...]
Article
Diana Solovyeva, Auteur ;
Jason Newton, Auteur ;
Keith Hobson, Auteur ;
James W. Fox, Auteur ;
Vsevolod Afanasyev, Auteur ;
Anthony D. Fox, Auteur
Scaly-sided Mergansers Mergus squamatus breed on freshwater rivers in far eastern Russia, Korea and China, wintering in similar habitats in China and Korea, but nothing was known of their moulting habitat. To investigate the moult strategies of [...]
Article
Santiago Guallar, Auteur ;
Angelina Ruiz-Sánchez, Auteur ;
Rafael Rueda-Hernández, Auteur ;
Peter Pyle, Auteur
During partial moults birds replace a variable number or percentage of old feathers. This quantity, known as moult extent, has been a primary variable used in comparative studies. However, different spatial configurations of feather replacement [...]
Article
Resident female Northern Lapwings Vanellus vanellus fight to exclude settlement by secondary females
Gaute Gronstol, Auteur ;
Terje Lislevand, Auteur ;
Ingvar Byrkjedal, Auteur
In systems with bi-parental care, sexual conflict theory states that a transition from monogamy to polygyny should increase fitness prospects for males and reduce fitness prospects of resident females. Behavioural observations of Northern Lapwin[...]
Article
Sonia Gabriela Ortiz-Maciel, Auteur ;
Alejandro Salinas-Melgoza, Auteur ;
Simon Octavio Valdez-Juarez, Auteur ;
Leonel Lopez-Toledo, Auteur ;
Ernesto Enkerlin-Hoeflich, Auteur
Stochastic and catastrophic events may strongly impact the dynamics of wild populations. Annual fluctuations in rainfall may affect parrot populations, but few studies address the impact of other stochastic or catastrophic events on their popula[...]
Article
Gregorio Moreno-Rueda, Auteur
Feather holes represent damage to the plumage of birds and are correlated with delayed moult. Uropygial gland size is negatively correlated with feather holes. Consequently, it was predicted that birds with smaller uropygial glands would have mo[...]
Article
Céline Arzel, Auteur ;
Lisa Dessborn, Auteur ;
Hannu Poysa, Auteur ;
Johan Elmberg, Auteur ;
Petri Nummi, Auteur ;
Kjell Sjoberg, Auteur
The capacity of migratory species to adapt to climate change may depend on their migratory and reproductive strategies. For example, reproductive output is likely to be influenced by how well migration and nesting are timed to temporal patterns [...]
Article
Kadri Moks, Auteur ;
Vallo Tilgar, Auteur
In birds, little is known about how the presence of predators alters parental food distribution decisions among nestlings. We found that experimentally increasing perceived predation risk changed parental care in female but not in male Great Tit[...]
Article
Concepcion Salaberria, Auteur ;
Patricia Celis, Auteur ;
Isabel Lopez-Rull, Auteur ;
Diego Gil, Auteur
Variable environments impose constraints on adaptation by modifying selection gradients unpredictably. Optimal bird development requires an adequate thermal range, outside which temperatures can alter nestling physiology, condition and survival.[...]
Article
Cody J. Dey, Auteur ;
Constance M. O'Connor, Auteur ;
Sigal Balshine, Auteur ;
James S. Quinn, Auteur
Social groups of the joint-laying Pukeko Porphyrio porphyrio melanotus typically contain one or two breeding females. Male Pukeko mated to two females father more offspring and therefore benefit from this mating arrangement; however, primary fem[...]
Article
James P. B. Grundy, Auteur ;
Aldina M. A. Franco, Auteur ;
Martin J. P. Sullivan, Auteur
Not all non-native species have strong negative impacts on native species. It is desirable to assess whether a non-native species will have a negative impact at an early stage in the invasion process, when management options such as eradication [...]
Article
Carlos Camacho, Auteur
Recruitment rates, natal philopatry and the onset of breeding activity are documented for the first time for the order Caprimulgiformes. Of 171 Red-necked Nightjars Caprimulgus ruficollis ringed as fledglings in southwestern Spain between 2008 a[...]
Article
Alison Howes, Auteur ;
Ralph Mac Nally, Auteur ;
Richard Loyn, Auteur ;
Jarrod Kath, Auteur ;
Michiala Bowen, Auteur ;
Clive McAlpine, Auteur ;
Martine Maron, Auteur
Anthropogenic activities often cause specialized and fragmentation-sensitive species to be replaced by competitive commensal or invasive species, resulting in reduced diversity and biotic homogenization. However, biotic homogenization driven by [...]
Article
Alexandre Chausson, Auteur ;
Isabelle Henry, Auteur ;
Bertrand Ducret, Auteur ;
Bettina Almasi, Auteur ;
Alexandre Roulin, Auteur
In the temperate zone, food availability and winter weather place serious constraints on European Barn Owl Tyto alba populations. Using data collected over 22years in a Swiss population, we analysed the influence of early pre-breeding food condi[...]
Article
Leandro Melendez, Auteur ;
Paola Laiolo, Auteur
The study of determinants of species' ranges along elevational gradients may shed light on the ecological factors that constrain their distribution and fundamental niche. We analysed the influence of the climate, habitat at different spatial sca[...]
Article
Michael Beaulieu, Auteur ;
Keith W. Sockman, Auteur
In short-lived species, parents are expected to favour their offspring and may therefore have to sacrifice the best part of their diet to feed their young (conflict hypothesis'). In addition, they need to maximize energy delivered per unit of ti[...]
Article
Thomas J. Robinson, Auteur ;
Lynn Siefferman, Auteur ;
Alexandra B. Bentz, Auteur ;
Thomas S. Risch, Auteur
The fitness-related consequences of egg size, independent of the influences of parental quality, are poorly understood in altricial birds. Not only can egg size and parental quality influence growth and survival, but each could influence the dev[...]
Article
Vicente Garcia-Navas, Auteur ;
Esperanza S. Ferrer, Auteur ;
Eva Serrano-Davies, Auteur
In species with biparental care, males and females share the benefits of investing in offspring but pay the costs individually. As a result of these evolutionary conflicts of interest between the sexes, it is expected that the two parents should[...]
Article
Todd E. Katzner, Auteur ;
Daniel S. Jackson, Auteur ;
Jamie Ivy, Auteur ;
Evgeny A. Bragin, Auteur ;
Andrew DeWoody, Auteur
Sex ratio theory attempts to explain observed variation in offspring sex ratio at both the population and the brood levels. In the context of low-fecundity organisms producing high-investment offspring, the drivers of adaptive variation in sex r[...]
Article
Bart A. Nolet, Auteur ;
Abel Gyimesi, Auteur ;
Bart van Lith, Auteur
After reproducing successfully, birds with extended parental care form family groups. Despite being the dominant social unit, such family groups have been reported to switch to alternative habitat earlier than adults without offspring, with pote[...]
Article
Veronika Javurkova, Auteur ;
Tomáš Albrecht, Auteur ;
Jakub Mrazek, Auteur ;
Jakub Kreisinger, Auteur
Microbial infection is considered a critical cause of hatching failure in birds. Although several behavioural mechanisms are believed to improve reproductive success in birds, their direct effect on the risk of bacterial trans-shell infection (B[...]
Article
Elske Schut, Auteur ;
Oscar Vedder, Auteur ;
Jan Komdeur, Auteur ;
Michael J. L. Magrath, Auteur
Hatching failure negatively impacts reproductive success in birds. One reason why eggs fail to hatch is that they are not fertilized, which may be because they receive insufficient sperm. In most passerines, copulation declines in frequency or c[...]
Article
Joshua I. Engel, Auteur ;
Kizungu Byamana, Auteur ;
Charles Kahindo, Auteur ;
John M. Bates, Auteur ;
Jon Fjeldså, Auteur
Barred Long-tailed Cuckoo (Cercococcyx montanus) currently comprises two morphologically distinct subspecies, one resident in the Albertine Rift (montanus) and one in east and southeast Africa (patulus) in which there are migrations that are poo[...]
