| Titre : | Ardea 87(1) - 1999 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
S. Akesson, Auteur
Dans
Ardea (87(1) 1999)
Ringing recoveries from 18 different passerine species captured at an inland ringing site in south Sweden (Kvismare Bird Observatory) were analysed with respect to direction and distance of migration in order to investigate the occurrence of tem[...]
Article
A. Roulin, Auteur ;
A. L. Ducrest, Auteur ;
C. Dijkstra, Auteur
Dans
Ardea (87(1) 1999)
When the overall food demand of the young increases, parents can either increase their effort to feed the brood, potentially reducing their residual reproductive value, or alternatively maintain their effort, leading to offspring mortality. In l[...]
Article
M. Bosch, Auteur ;
J. Figuerola, Auteur
Dans
Ardea (87(1) 1999)
The effect of tick Ornithodoros (Alectorobius) maritimus larvae on the growth of Yellow-legged Gull Larus michahellis* chicks was studied at the Medes Islands colony (NE Spain). Within broods, chicks infested by more larvae weighed less had a po[...]
Article
T. M. Keller, Auteur ;
G. H. Visser, Auteur
Dans
Ardea (87(1) 1999)
In the winters of 1993/94 and 1994/95 the daily energy expenditure (DEE) of Great Cormorants Phalacrocorax carbo sinensis was measured using the doubly labelled water technique (DLW). This was the first time the method has been used on a Phalacr[...]
Article
A. Velando, Auteur ;
J. E. Ortega-Ruano, Auteur ;
J. Freire, Auteur
Dans
Ardea (87(1) 1999)
This study analyses the mortality of chicks of the European Shag Stictocarbo aristotelis in the Cies Islands (NW Spain). Chick mortality on this island is the main cause of the yearly variation in chick production. By visiting the nests after ha[...]
Article
H. Duttmann, Auteur ;
S. Dieleman, Auteur ;
T. G. G. Groothuis, Auteur
Dans
Ardea (87(1) 1999)
We investigated effects of testosterone treatment on timing and rate of moult of wing-feathers in male Shelducks Tadorno tadorna, and whether this treatment influences the timing of moult in untreated females. Three experimental treatments were [...]
Article
L. Bakker, Auteur ;
R. Van Der Wal, Auteur ;
P. Esselink, Auteur ;
A. Siepel, Auteur
Dans
Ardea (87(1) 1999)
The colonisation by Greylag Geese Anser anser of a new autumn migration staging area was studied on the island of Schiermonnikoog, The Netherlands. Over 500 Greylag Geese first visited the island in 1991. During subsequent years, peak numbers ro[...]
Article
R. R. Veit, Auteur
Dans
Ardea (87(1) 1999)
Petrels feeding on Antarctic Krill Euphausia superba use two basic strategies to locate prey patches. One strategy is area-restricted search, in which individuals interrupt straight-line motion on detecting prey, and then circle about. This incr[...]
Article
G. Sangster, Auteur ;
C. J. Hazevoet, Auteur ;
A. B. Van Den Berg, Auteur ;
C. S. K. Roselaar, Auteur ;
R. Sluys, Auteur
Dans
Ardea (87(1) 1999)
The Dutch avifaunal list is revised based on the principles of phylogenetic theory and methodology. A phylogenetic approach to species-level taxa is adopted. In contrast to the 'Biological Species Concept', this approach is compatible with the r[...]
Article
J. J. de Leeuw, Auteur
Dans
Ardea (87(1) 1999)
The foraging skills of Tufted Duck Aythya fuligula and Scaup Aythya marila feeding on Zebra Mussels Dreissena polymorpha were studied in experiments under seminatural diving conditions with relevance to the IJssalmeer/Markermeer area (large lake[...]
Article
R. Foppen, Auteur ;
C. J. F. ter Braak, Auteur ;
J. Verboom, Auteur ;
R. Reijnen, Auteur
Dans
Ardea (87(1) 1999)
Sedge Warbler populations in The Netherlands have declined dramatically over the last 25 years, especially between 1973-75 and 1982-85. Population declines correlate with yearly rainfall in the western part of the Sahel-Soudan zone, the most pro[...]
Article
L. C. Grendstad, Auteur ;
A. Moksnes, Auteur ;
E. Roskaft, Auteur
Dans
Ardea (87(1) 1999)
A significant proportion of Redwings Turdus iliacus reject non-mimetic model Cuckoo Cuculus canorus eggs experimentally introduced into their nests. However, very few cases of Cuckoo parasitism have been recorded for this species. In the present[...]
Article
L. Serra, Auteur ;
D. A. Whitelaw, Auteur ;
A. J. Tree, Auteur ;
L. G. Underhill, Auteur
Dans
Ardea (87(1) 1999)
Data on 355 Grey Plovers Pluvialis squatarola trapped in South Africa in 1971-1997 were used to describe seasonal body mass variation and moult in relation to their very long migrations. The estimated duration of adult primary moult, 131 days, w[...]
