| Titre : | Journal of Avian Biology 35(1) - JAN 2004 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
J. A. Gessaman, Auteur ;
K. Newgrain, Auteur ;
B. Green, Auteur
This study is the first validation of the doubly-labeled water (DLW) method on birds (1) to evaluate the accuracy of 2 points versus multiple points for computing fractional isotopic washout rates (k) and CO(2) production (rCO(2)), (2) to measur[...]
Article
Fat soluble antioxidants in brood-rearing great tits Parus major: relations to health and appearance
P. Horak, Auteur ;
P. F. Surai, Auteur ;
I. Ots, Auteur ;
A. P. Moller, Auteur
The concept of parasite-mediated sexual selection assumes that females may improve offspring fitness by selecting mates on the basis of sexual ornaments that honestly reveal the health state of a partner. Expression of such signals may be partic[...]
Article
C. N. Lotz, Auteur ;
C. M. del Rio, Auteur
Most terrestrial animals face the challenge of having to conserve water in a desiccating environment. Not surprisingly, the ability to produce concentrated urine has been relatively well studied in birds. Nectar-feeding birds are unusual among t[...]
Article
J. M. Arnold, Auteur ;
J. J. Hatch, Auteur ;
I. C. T. Nisbet, Auteur
Reproductive success declines over the course of the breeding season in many bird species. Two categories of hypothesis have been evoked to explain this decline. The "timing" hypothesis suggests that seasonal declines in breeding success are att[...]
Article
K. P. Huyvaert, Auteur ;
D. J. Anderson, Auteur
We documented natal and breeding dispersal at several spatial scales by Galapagos Nazca boobies Sula grand, a wide-ranging pelagic seabird. We found exceptionally low degrees of both types of dispersal despite these birds' vagility. Median natal[...]
Article
R. Jovani, Auteur ;
D. Serrano, Auteur
The distribution of feather mites (Astigmata) along the wing of passerine birds could change dramatically within minutes because of the rapid movement of mites between feathers. However, no rigorous study has answered how fine-tuned is the patte[...]
Article
N. Sapir, Auteur ;
I. Tsurim, Auteur ;
B. Gal, Auteur ;
Z. Abranisky, Auteur
In order to succeed in crossing extensive ecological barriers, migratory birds usually deposit fuel en route. High rates of fuel deposition may enable birds to shorten their total migration time and are therefore advantageous for time-minimizing[...]
Article
M. A. Rubega, Auteur ;
L. W. Oring, Auteur
The role of salt glands in avian osmoregulation has been widely studied. Acclimation to saline habitats in aquatic birds involves increases in the relative size and complexity of the salt glands, and it is generally agreed that salt gland size v[...]
Article
S. Skjelseth, Auteur ;
A. Moksnes, Auteur ;
E. Roskaft, Auteur ;
H. L. Gibbs, Auteur ;
M. Taborsky, Auteur ;
B. Taborsky, Auteur ;
M. Honza, Auteur ;
O. Kleven, Auteur
Microsatellite DNA markers were used to investigate parentage relationships in a population of common cuckoo Cuculus canorus. Thirty adults and 55 nestlings were genotyped at six loci from blood samples collected over a four-year period. To test[...]
Article
K. S. S. Hall, Auteur ;
H. Ryttman, Auteur ;
T. Fransson, Auteur ;
B. O. Stolt, Auteur
The size of an animal is of utmost importance for its overall success and each species is thought to have its own optimal size. If this is true, size traits ought to be under stabilising selection unless the animal is living in a highly unstable[...]
