| Titre : | Journal of Avian Biology 30(2) - JUN 1999 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
S. M. Yezerinac, Auteur ;
H. L. Gibbs, Auteur ;
J. V. Briskie, Auteur ;
R. Whittam, Auteur ;
R. Montgomerie, Auteur
The proportion of extrapair paternity is known to vary greatly among species, but differences between populations of the same species have rarely been considered. We used microsatellite DNA markers to assess parentage of offspring in a subarctic[...]
Article
R. P. Wilson, Auteur ;
M. A. M. Kierspel, Auteur ;
J. A. Scolaro, Auteur ;
S. Laurenti, Auteur ;
J. Upton, Auteur ;
H. Gallelli, Auteur ;
E. Frere, Auteur ;
P. Gandini, Auteur
We looked at the routes taken by Magellanic Penguins up the beach while moving between the sea and the colony at a breeding site in San Julian, Argentina. Birds swam parallel to the shore for a period before leaving the water to cross the beach [...]
Article
K. C. Quek, Auteur ;
N. S. Sodhi, Auteur ;
A. U. Kara, Auteur
We evaluated the relationship between the intensity of parasites (the chewing lice Columbicola columbae and Campanulotes bidentatus, and the haematozoon Haemoproteus columbae) and the magnitude of fluctuating asymmetry (FA) of their Rock Pigeon [...]
Article
T. W. Arnold, Auteur
Most Holarctic waders lay determinant clutches of four eggs, but the adaptive significance of this clutch size remains unresolved. The incubation-limitation hypothesis posits that waders cannot successfully incubate larger clutches, but this hyp[...]
Article
M. Andersson, Auteur
The evolution of skuas is puzzling in several respects. Based on cladistic analysis of behaviour and review of other evidence, a likely phylogeny is suggested which is used to trace the evolution of plumage coloration and other trails in skuas. [...]
Article
M. C. Witmer, Auteur
Fruit-eating birds are thought to inefficiently digest and/or assimilate nutrients from fruits. Contradicting this established premise, I found that Cedar Waxwings Bombycilla cedrorum and three thrush species absorbed fruit sugars efficiently, c[...]
Article
S. Andersson, Auteur
Many birds perceive, and some seem to communicate, in the W-A waveband (320-400 nm) invisible to humans, but the morphological mechanism and thereby scope for ultraviolet plumage signalling remain largely unstudied. No avian pigments or iridesce[...]
Article
B. Faivre, Auteur ;
J. Secondi, Auteur ;
C. Ferry, Auteur ;
L. Chastragnat, Auteur ;
F. Cezilly, Auteur
Icterine Warbler Hippolais icterina and Melodious Warbler H. polyglotta are closely related species with parapatric breeding ranges. Their breeding ranges overlap only in a narrow zone in western Europe, where the Icterine Warbler population is [...]
Article
J. J. de Leeuw, Auteur ;
M. R. van Eerden, Auteur ;
G. H. Visser, Auteur
Diving ducks face the strongly cooling properties of aquatic environments. In experiments with Tufted Ducks Aythya fuligula feeding on zebra mussels Dreissena polymorpha in outdoor cages, we measured changes in food consumption and diving behavi[...]
Article
I. F. Hill, Auteur ;
B. H. Cresswell, Auteur ;
R. E. Kenward, Auteur
Attaching radio-tags to highly dynamic organisms can bias the data collected. The nature and extent of any bias should be understood and quantified. This is vital with an untested attachment method or when tagging a new species or age-class. The[...]
Article
C. Moskat, Auteur ;
T. I. Fuisz, Auteur
To test the evolutionary arms race hypothesis (Dawkins and Krebs 1979) on the Red-backed Shrike-Cuckoo host-parasite relationship, a field test was carried out by placing artificial Cuckoo Cuculus canorus eggs into
Article
H. Weimerskirch, Auteur ;
G. Fradet, Auteur ;
Y. Cherel, Auteur
ability of Antarctic Prions Pachyptila desolata to regulate their provisioning effort was studied at Kerguelen Islands by comparing two seasons when food availability differed, and by experimental manipulation of foraging costs. Antarctic Prions[...]
Article
B. Taborsky, Auteur ;
M. Taborsky, Auteur
Different populations of kiwi Apteryx spp. live in very different habitats and climatic conditions, and they vary greatly with regard to population densities and sex ratios. Populations also differ remarkably in their social and mating patterns.[...]
Article
K. Reid, Auteur ;
G. M. Liddle, Auteur ;
P. A. Prince, Auteur ;
J. P. Croxall, Auteur
The frequency and mass of meals delivered to ten Antarctic Prion Pachyptila desolata chicks nesting at Bird Island, South Georgia were examined using automated weighing systems, placed in the nest chamber of the burrow. The weighing systems, whi[...]
Article
T. Lubjuhn, Auteur ;
T. Gerken, Auteur ;
J. Brun, Auteur ;
J. T. Epplen, Auteur
The frequency of extra-pair paternity was studied in a population of Coal Tits Parus ater using DNA fingerprinting technique. High values were obtained: 15 of the 20 broods investigated (75%) contained at least one nestling sired by an extra-pai[...]
