| Titre : | Journal of Avian Biology 35(3) - MAY 2004 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
L. De Neve, Auteur ;
J. J. Soler, Auteur ;
M. Soler, Auteur ;
T. Perez-Contreras, Auteur ;
M. Martin-Vivaldi, Auteur ;
J. G. Martinez, Auteur
Food availability is an important factor affecting breeding success in birds. Food supplementation experiments in birds have in general focused on the effects on reproductive success in terms of female investment (laying date, clutch size, egg s[...]
Article
A. Leitao, Auteur ;
T. J. M. Van Dooren, Auteur ;
K. Riebel, Auteur
The description of within-population variation of a signal is an important first step when studying its communicative function. In chaffinches Fringilla coelebs all song types consist of two structurally different parts: the trill (a series of t[...]
Article
L. De Neve, Auteur ;
J. J. Soler, Auteur ;
M. Soler, Auteur ;
T. Perez-Contreras, Auteur
Reproductive success in many avian populations declines throughout the breeding season. Two hypotheses have gained attention to explain such a decline: the "timing" hypothesis proposes that deteriorating food availability causes the decline in r[...]
Article
M. Van Tuinen, Auteur ;
D. Waterhouse, Auteur ;
G. J. Dyke, Auteur
The study of avian molecular systematics currently lags behind that of mammals in several ways. Little phylogenetic resolution is observed among orders and phylogenetic studies below the ordinal level largely remain based on fast evolving mitoch[...]
Article
K. Grosch, Auteur
Although redstarts Phoenicurus phoenicurus and black redstarts P. ochruros breed in different habitats they have been found to interbreed and to produce viable and fertile offspring, which backcross to the parental species. In a dual choice expe[...]
Article
P. J. Weatherhead, Auteur ;
G. Blouin-Demers, Auteur
Despite the overriding importance of nest predation for most birds, our understanding of the relationship between birds and their nest predators has been developed largely without reliable information on the identity of the predators. Miniature [...]
Article
B. R. Barber, Auteur ;
J. E. Martinez-Gomez, Auteur ;
A. T. Peterson, Auteur
Recently acquired tissue makes possible a first molecular assessment of the taxonomic position of the Soccoro Island endemic mimid Mimodes graysoni. Mitochondrial DNA sequence data from the ND-2 gene was analyzed using parsimony, maximum likelih[...]
Article
M. Irestedt, Auteur ;
J. Fjeldsa, Auteur ;
P. G. P. Ericson, Auteur
The woodcreepers is a highly specialized lineage within the New World suboscine radiation. Most systematic studies of higher level relationships of this group rely on morphological characters, and few studies utilizing molecular data exist. In t[...]
Article
W. A. Searcy, Auteur ;
S. Peters, Auteur ;
S. Nowicki, Auteur
We manipulated the quantity of food provided to hand-reared song sparrows Melospiza melodia from 3 to 18 days post-hatching, a period when young birds in the wild are especially likely to experience nutritional stress. A control group was given [...]
Article
J. M. Hipfner, Auteur ;
K. Charleton, Auteur ;
W. E. Davies, Auteur
We removed first eggs from early-laying females to measure rates and consequences of relaying in Cassin's auklets Ptychoramphus aletaicus and rhinoceros auklets Cerorhinca monocerata at Triangle Island, British Columbia, Canada. Based on egg siz[...]
Article
A. N. Radford, Auteur ;
M. A. du Plessis, Auteur
Cooperatively breeding groups may be constrained in size by the territory available to them, or territories may be expanded to accommodate extra group members. Here, we show that there was no relationship between the number of adult green woodho[...]
Article
A. V. Vahatalo, Auteur ;
K. Rainio, Auteur ;
A. Lehikoinen, Auteur ;
E. Lehikoinen, Auteur
The timing of arrival of 81 migratory species in response to the North Atlantic Oscillation (NAO) was studied at two Finnish bird observatories (1970-99). Timing was determined for the first migrants and for the peak of migration, as well as for[...]
Article
M. T. Murphy, Auteur
I used data from a 13-year study of eastern kingbirds Tyrannus tyrannus from central New York, USA, to evaluate the relative impact of female age and body size on reproduction. I also calculated repeatabilities of reproductive traits for both fe[...]
Article
P. Catry, Auteur ;
A. Campos, Auteur ;
V. Almada, Auteur ;
W. Cresswell, Auteur
Birds often show some form of social segregation during winter, both at large geographical scales (a consequence of differential migration) and at the regional or local level, when comparing different habitats or micro-habitats. However, our und[...]
