| Titre : | Journal of Avian Biology 33(3) - SEP 2002 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
M. Hansell, Auteur ;
G. D. Ruxton, Auteur
We sought to investigate the extent to which natural feather availability constrains avian nest construction by provisioning a site with feathers. Twenty patches, each of fifty marked feathers, were made available to naturally breeding passerine[...]
Article
B. Hansson, Auteur ;
S. Bensch, Auteur ;
D. Hasselquist, Auteur
For most species, it is currently not known whether individual characteristics and population parameters affecting dispersal distances within the local population are also affecting dispersal of individuals emigrating longer distances. We evalua[...]
Article
J. M. Bates, Auteur
Restriction fragment length polymorphisms of mtDNA were used to assess genetic structure at two geographic scales for five species of Neotropical forest-understory birds. At the local scale (in northeastern Bolivia), I studied populations of eac[...]
Article
K. Foerster, Auteur ;
A. Poesel, Auteur ;
H. Kunc, Auteur ;
B. Kempenaers, Auteur
In male birds, the gonadal hormone testosterone (T) is known to influence territorial and mating behaviour. Plasma levels of T show seasonal fluctuations which vary in relation to mating system and social instability. First, we determined the na[...]
Article
R. Vaclav, Auteur ;
H. Hoi, Auteur ;
D. Blomqvist, Auteur
Male quality may influence both the outcome of sperm competition and female faithfulness. In male house sparrows Passer domesticus, the size of the black throat patch (badge) signals dominance and perhaps attractiveness. So far, however, no stud[...]
Article
S. Nowicki, Auteur ;
W. A. Searcy, Auteur ;
T. Krueger, Auteur ;
M. Hughes, Auteur
Lack (1946) suggested that male songbirds exhibit consistent individual differences in the vigor or manner in which they defend their territories against intrusion. The causes and consequences of such individual variation have not been incorpora[...]
Article
J. Gonzalez-Solis, Auteur ;
P. H. Becker, Auteur
We investigated courtship feeding and copulatory behaviour of common terns Sterna hirundo in relation to age. We found a significant positive correlation between the number of courtship feedings delivered to females and the number of mountings. [...]
Article
S. Massemin, Auteur ;
E. Korpimäki, Auteur ;
V. Poyri, Auteur ;
T. Zorn, Auteur
Hatching asynchrony in altricial birds may result in a competitive disadvantage for the youngest nestlings compared to older siblings. We studied the effects of a size hierarchy on the growth rate of Eurasian kestrels Falco tinnunculus chicks in[...]
Article
T. Grim, Auteur
I propose that the existence of imperfect adaptations (e.g. egg mimicry) in brood parasites and their hosts (e.g. discrimination abilities) could reflect age-dependent territory and nest-site selection patterns of the host. Studies of various pa[...]
Article
B. Moe, Auteur ;
I. Langseth, Auteur ;
M. Fyhn, Auteur ;
G. W. Gabrielsen, Auteur ;
C. Bech, Auteur
We investigated the seasonal pattern of changes in body condition of breeding black-legged kittiwakes Rissa tridactyla in Svalbard (79degreesN) to evaluate whether changes in body condition were a consequence of the energetic demands of breeding[...]
Article
M. Martin-Vivaldi, Auteur ;
M. Soler, Auteur ;
A. P. Moller, Auteur
Most studies that have tested the egg-recognition and egg-rejection ability of European cuckoo Cuculus canorus hosts have used artificial model eggs that are much harder than real Cuckoo eggs. Here we evaluate whether the use of such models over[...]
Article
M. J. L. Magrath, Auteur ;
D. J. Green, Auteur ;
J. Komdeur, Auteur
Offspring sex ratios were examined at the population and family level in the sexually monomorphic, socially monogamous fairy martin Petrochelidon ariel at five colony sites over a 4-year period (1993 1996). The sex of 465 nestlings from 169 broo[...]
Article
L. Santisteban, Auteur ;
K. E. Sieving, Auteur ;
M. L. Avery, Auteur
How predators locate avian nests is poorly understood and has been subjected to little experimental inquiry. We examined which sensory stimuli were important in the nest-Finding behavior of fish crows Corvus ossifragus, a common nest predator in[...]
Article
S. Holt, Auteur ;
D. P. Whitfield, Auteur ;
K. Duncan, Auteur ;
S. Rae, Auteur ;
R. D. Smith, Auteur
Body mass loss is frequently observed in breeding birds: whether this is an adaptive response to a change in the relative value of body stores and locomotion performance or a consequence of energetic constraint is still in debate. The male alone[...]
Article
K. Lilliendahl, Auteur
Theoretically, the trajectories describing the daily accumulation of body reserves are expected to differ between bird species in relation to whether or not they hoard food. To carry reserves on the body may be costly and hoarding species can be[...]
Article
P. Christe, Auteur ;
A. P. Moller, Auteur ;
G. Gonzalez, Auteur ;
F. de Lope, Auteur
The intensity of parasite infections often increases during the reproductive season of the host as a result of parasite reproduction, increased parasite transmission and increased host susceptibility. We report within-individual variation in imm[...]
