| Titre : | Journal of Ornithology 145(2) - APR 2004 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
B. Hansson, Auteur ;
W. Roggeman, Auteur ;
G. De Smet, Auteur
We report on the second case of a reed warbler x great reed warbler hybrid (Acrocephalus scirpaceus and A. arundinaceus). The bird was captured during a standardised ringing session in Belgium in autumn 1999, and fell between the parental specie[...]
Article
Matthieu Guillemain, Auteur ;
H. Fritz, Auteur ;
M. Klaassen, Auteur ;
Alan R. Johnson, Auteur ;
Heinz Hafner, Auteur
Most species of long-distance migratory birds put on energy stores to fuel their travels. However, recent studies have highlighted the potential costs associated with carrying too much fuel, either through increased predation risk or decreased f[...]
Article
Z. H. Huang, Auteur ;
N. F. Liu, Auteur
This study used polymerase chain reaction (PCR) and dideoxy direct sequencing methods to analyze the genetic structure of the chukar partridge (Alectoris chukar) in the Longdong Loess Plateau, northwestern China. A total of 491 nucleotides of mi[...]
Article
C. Randler, Auteur
The number of hybrids recorded in the field may be biased because these data may simply reflect the detectability of a hybrid pairing. A questionnaire was constructed for assessing the detectability of natural avian hybrids. Ratings from 17 inde[...]
Article
V. Salewski, Auteur ;
R. Altwegg, Auteur ;
B. Erni, Auteur ;
K. H. Falk, Auteur ;
F. Bairlein, Auteur ;
B. Leisler, Auteur
Some theories about moult strategies of Palaearctic passerine migrants assume that birds adapt timing of moult to environmental conditions such as rainfall on their African wintering grounds. Species wintering in the northern tropics should limi[...]
Article
A. Villegas, Auteur ;
J. M. S. Guzman, Auteur ;
C. Corbacho, Auteur ;
P. Corbacho, Auteur ;
J. M. Vargas, Auteur
The Bald Ibis (Geronticus eremita) is one of the world's most threatened species of birds. The number of individuals in captivity is several times greater than the number of individuals in the wild, so that the re-introduction of individuals fro[...]
Article
I. Hahn, Auteur ;
U. Romer, Auteur ;
R. Schlatter, Auteur
The first nest sites of the endemic Masafuera Rayadito (Aphrastura masafuerae) are described, the first one being found on 16 December 1992. Masafuera Rayaditos breed in small natural holes in steep rocks, the nest being hidden within the rock a[...]
Article
M. Klaassen, Auteur ;
J. H. Beekman, Auteur ;
J. Kontiokorpi, Auteur ;
R. J. W. Mulder, Auteur ;
B. A. Nolet, Auteur
Because energy reserves limit flight range, wind assistance may be of crucial importance for migratory birds. We tracked eight Bewick's swans Cygnus columbianus bewickii, using 95-g satellite transmitters with altimeters and activity sensors, du[...]
Article
L. Tomialojc, Auteur ;
T. Wesolowski, Auteur
The Bialowieza Forest (BF) is an extensive and relatively little changed forest complex on the Polish-Belarussian border. Data on the structure and diversity of its breeding avifauna have mostly been collected in primeval old-growth stands, pres[...]
Article
J. Gonzalez-Solis, Auteur ;
P. H. Becker, Auteur ;
L. Jover, Auteur ;
X. Ruiz, Auteur
It has been Suggested that breeding performance differs between young and old birds due to the appearance and disappearance of phenotypes through differential survival (selection hypothesis) or differential recruitment (delayed breeding hypothes[...]
Article
H. Kruckenberg, Auteur ;
J. Borbach-Jaene, Auteur
In 1995 to 2000, site-fidelity of colour-marked Nordic greylag geese (Anser anser) was examined during spring migration in the Rheiderland, an important stopover site in NW Germany. The results demonstrated that site fidelity in greylag geese de[...]
Article
N. Chernetsov, Auteur
Variation of wing pointedness index between groups of juveniles captured in different months (July, August, and September) and at different stages of juvenile moult was studied in three Acrocephalus warbler species captured on the Courish Spit o[...]
Article
H. Kruckenberg, Auteur ;
J. Borbach-Jaene, Auteur
In 1995 to 2000, site-fidelity of colour-marked Nordic greylag geese (Anser anser) was examined during spring migration in the Rheiderland, an important stopover site in NW Germany. The results demonstrated that site fidelity in greylag geese de[...]
