| Titre : | Ardea 92(2) - FAL 2004 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
D. Wysocki, Auteur
The within-season divorce rate of the European Blackbird Turdus merula was studied in 1997-2003 in two city parks in Szczecin (NW Poland). Within the population studied, 14 and 11% of pairs in each of the park were observed to divorce, the early[...]
Article
L. J. Wilson, Auteur ;
F. Daunt, Auteur ;
S. Wanless, Auteur
The Common Guillemot Uria aalge is one of the most abundant seabird species in the North Atlantic. The diet delivered to the chicks by breeding adults is well known, since the food is carried in the bill and readily observed at colonies. Much le[...]
Article
M. A. Bishop, Auteur ;
N. Warnock, Auteur ;
J. Y. Takekawa, Auteur
Western Sandpipers Calidris mauri are differential migrants on their nonbreeding areas, with females wintering farther south. Earlier passage of males in the spring has been explained by sexual differences in winter latitude (male-biased sex rat[...]
Article
L. Giannangeli, Auteur ;
A. De Sanctis, Auteur ;
R. Manginelli, Auteur ;
F. M. Medina, Auteur
In this study we describe seasonal variation in the diet of the Stone Curlew Burhinus oedicnemus distinctus at La Palma, one of the Western Islands of the Canary Archipelago. The study was conducted through faecal analysis. Faeces were collected[...]
Article
M. Green, Auteur
Spring migration of arctic breeding birds, mainly waders and Dark-bellied Brent Geese Branta bernicla, was followed by tracking radar in Lund, South Sweden, during 1998-2001 in order to evaluate the capacity of these birds to exploit favourable [...]
Article
P. Tryjanowski, Auteur ;
A. Surmacki, Auteur ;
J. Bednorz, Auteur
Based on the fate of 48 nests of Raven Corvus corax we tested the hypothesis that low return rates of Raven were caused by unsuccessful nesting attempts in previous seasons. Ravens nested on electrical power pylons in 19961998 in an intensively [...]
Article
J. Herranz, Auteur ;
J. Traba, Auteur ;
M. B. Morales, Auteur ;
F. Suarez, Auteur
We analysed variation in size and weight of 127 Skylark Alauda arvensis and 179 Short-toed Lark Calandrella brachydactyla nests studied over four years in central Spain. More specifically, we explored three groups of hypotheses: hypotheses based[...]
Article
K. S. Hoset, Auteur ;
Y. Espmark, Auteur ;
A. Moksnes, Auteur ;
T. Haugan, Auteur ;
M. Ingebrigtsen, Auteur ;
M. Lier, Auteur
Climatic conditions may have large implications for the reproductive cycle in birds, especially for a small songbird breeding in the high arctic. In three consecutive breeding seasons, the relationship between ambient temperature, and parental f[...]
Article
R. DeCandido, Auteur ;
D. Allen, Auteur ;
R. Yosef, Auteur ;
K. L. Bildstein, Auteur
Counts of migrating Blue-tailed Bee-eaters Merops philippinus and Blue-throated Bee-eaters M. viridis, as well as five raptor species were made in March 2000 and March 2001 at Tanjung Tuan, a coastal migration watchsite in western Malaysia. Tota[...]
Article
L. Naef-daenzer, Auteur ;
R. G. Nager, Auteur ;
L. F. Keller, Auteur ;
B. Naef-daenzer, Auteur
We analysed egg-hatching rates, the resulting clutch size and fledging weights in relation to prey abundance in Great Tits Parus major in a mixed deciduous forest in Switzerland. We show that the number of oaks within 20 m from the nest affected[...]
Article
V. Nijman, Auteur
A study of visible migration of raptors through the Dieng Mountains, Central Java, Indonesia, was based on six sites perpendicular to the axis of migration. At least 30 000 raptors migrated through the area annually over an 8-week period in Sep-[...]
Article
M. Pandolfi, Auteur ;
G. Gaibani, Auteur ;
A. Tanferna, Auteur
To establish the status of Peregrine populations not studied before, a short-term census can be useful. We monitored the Peregrine population in the Pollino National Park and surroundings (southern Italy) in 2001-02. The high density of 1.2-1.4 [...]
