| Titre : | Ardea 86(2) - 1998 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
F. Adriaensen, Auteur ;
N. Verwimp, Auteur ;
A. A. Dhondt, Auteur
Dans
Ardea (86(2) 1998)
Ringing recoveries of European Kestrels from north-western Europe have shown that a very low proportion of this population is migratory, and that even large-distance movements can be attributed mainly to dispersal movements of young birds. Sever[...]
Article
J. N. Kristiansen, Auteur
Dans
Ardea (86(2) 1998)
Egg predation in Greylag Geese Anser anser nesting in reedbeds was studied at three sites in Vejleme (NW Denmark). Overall, 34% of all clutches hatched successfully (range 26-53%), while at least 34% of all nests were abandoned. Avian predation [...]
Article
J. Figuerola, Auteur ;
R. Gutierrez, Auteur
Dans
Ardea (86(2) 1998)
Carotenoids are responsible for the bright red and yellow plumage of birds. These substances cannot be synthesised by birds and must be obtained from the diet and transported through the blood to the feathers. The carotenoid content of blood was[...]
Article
G. Blanco, Auteur ;
J. A. Cuevas, Auteur ;
J. A. Fargallo, Auteur
Dans
Ardea (86(2) 1998)
The breeding abundance of Choughs Pyrrhocorax pyrrhocorax war investigated in relation to type of rock and related features of nesting cliffs along rivers in south-eastern Madrid (Central Spain). Gypsum cliffs are larger and provide more nest si[...]
Article
D. Liebers, Auteur ;
H. U. Peter, Auteur
Dans
Ardea (86(2) 1998)
As part of a long-term population study, we investigated the social and reproductive behaviour of Jackdaws in a colony with 70 nestboxes and about 180 birds near Jena, Germany. Three kinds of social relationships were recognized between breeding[...]
Article
T. Slagsvold, Auteur ;
M. A. Johansen, Auteur
Dans
Ardea (86(2) 1998)
In most species of altricial birds, females experience great changes in body mass during the reproductive period. Mass loss of females after hatching of the young has commonly been regarded as a result of increased reproductive stress. Alternati[...]
Article
J. S. Monros, Auteur ;
E. J. Belda, Auteur ;
E. Barba, Auteur
Dans
Ardea (86(2) 1998)
The effects of delays of hatching date, caused by temporary interruptions or lengthening of breeding activities such as nest building, laying or incubation, on several fitness-related components were studied in a Great Tit Pants major population[...]
Article
J. Graveland, Auteur
Dans
Ardea (86(2) 1998)
Several species of migratory marsh birds have declined in Central and Western Europe. An important question is whether this decline is primarily caused by loss of wetlands on the wintering grounds in Africa or by a decline in habitat quality in [...]
Article
D. L. Thomson, Auteur ;
R. W. Furnes, Auteur ;
P. Monaghan, Auteur
Dans
Ardea (86(2) 1998)
We used doubly labelled water to study the field metabolic rates of breeding Kittiwakes Rissa tridactyla during the incubation phase, and to compare these with the metabolic rates of Kittiwakes rearing chicks. During the incubation phase, birds [...]
Article
J. J. Palomino, Auteur ;
M. Martin-Vivaldi, Auteur ;
M. Soler, Auteur ;
J. J. Soler, Auteur
Dans
Ardea (86(2) 1998)
Avian nest building behaviour has generally been viewed as a result of natural selection, and several functional hypotheses have been suggested to explain variance in nest size. These include responses to predation and parasitism risk, and aspec[...]
Article
H. Schekkerman, Auteur ;
M. W. J. Van Roomen, Auteur ;
L. G. Underhill, Auteur
Dans
Ardea (86(2) 1998)
Growth and survival of chicks and movements of broods were studied in Curlew Sandpipers in N.E. Taimyr, Siberia, in 1991. Breeding was synchronised, 73% of 30 clutches hatching during 10-15 July. Nests were distributed clumped in dry frost-heave[...]
