| Titre : | Ardea 90(1) - SPR 2002 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
D. Rubolini, Auteur ;
M. Schiavi, Auteur
Elongated outer tail streamers in Barn Swallows may play a functional role during the feeding activity, by enhancing manoeuvrability. Here we focus on the relationship between tail length and fat stores in adult male and female Barn Swallows cap[...]
Article
A. Lindstrom, Auteur ;
M. Klaassen, Auteur ;
T. Piersma, Auteur ;
N. Holmgren, Auteur ;
L. Wennerberg, Auteur
Little is known about the fuel stores that arctic-breeding waders put on before departure from the breeding grounds. During a ship-based expedition to arctic Canada, we caught waders at seven, mainly coastal sites, within 68degrees-76degreesN an[...]
Article
W. F. De Boer, Auteur
To analyse the importance of biotic and abiotic variables and human presence in structuring an intertidal bird community shorebirds were counted at different sites at Inhaca Island, southern Mozambique. It was expected that, due to the greater m[...]
Article
M. Green, Auteur ;
T. Piersma, Auteur ;
J. Jukema, Auteur ;
P. de Goeij, Auteur ;
B. Spaans, Auteur ;
J. A. Van Gils, Auteur
In 1999 and 2000, 45 Bar-tailed Godwits Limosa lapponica were supplied with radio-transmitters during spring staging on the island Texel in the western Wadden Sea. With the use of Automatic Radio Tracking Stations (ARTS) on Texel and in south Sw[...]
Article
D. N. Carss, Auteur ;
G. R. Ekins, Auteur
Inland colonies of Great Cormorants Phalacrocorax carbo in Britain contain individuals of both European subspecies the Atlantic Great Cormorant P.c. carbo and the Continental Great Cormorant P.c. sinensis. Not only are the two breeding together,[...]
Article
K. Camphuysen, Auteur
Chick growth and mortality characteristics (including predation risk) have been considered key selective factors to account for the evolution of the intermediate fledging strategy in Common Guillemots Uria aalge. The semi-precocial young leave t[...]
Article
P. D. O'Hara, Auteur ;
D. B. Lank, Auteur ;
F. S. Delgado, Auteur
Resident species typically undergo post-nuptial moult directly following breeding, whereas long-distance migrant species usually do so after arrival at stagoing or non-breeding ('wintering') grounds. It has been suggested that moult and migratio[...]
Article
M. Salek, Auteur ;
P. Smilauer, Auteur
The effects of population density, nest pattern, size of nest aggregations and position of nests within aggregations on predation rates were analysed in two Northern Lapwing Vanellus vanellus populations in agricultural land 1988-98. Two sites ([...]
Article
F. Jiguet, Auteur ;
D. Ollivier, Auteur
In this study, a method based on plumage patterns and iris colour is used to identify individual male Little Bustards Tetrax tetrax. High year-to-year repeatability of plumage patterns was proven for 10 colour-ringed males (over 80% of plumage c[...]
Article
T. C. Michaelsen, Auteur ;
I. Byrkjedal, Auteur
When attacked by predators many bird species form flocks, within which individuals may reduce risk by specific positioning behaviour. Shorebird flocks often attempt to escape raptor attacks by twisting and turning in coordinated flights. We stud[...]
Article
S. Deregnaucourt, Auteur ;
J. C. Guyomarc'h, Auteur ;
N. J. Aebischer, Auteur
Cross-breeding experiments between two strains of domestic Japanese Quail Cottion. japonica and one strain of European Quail Coturnix coturnix showed that it is easy to obtain the hybrid combinations F,, F 2 as well as backcrosses. Fertility of [...]
Article
P. Laiolo, Auteur ;
A. Rolando, Auteur
We analysed the spectrotemporal features of the begging calls of Red-billed Chough Pyrrhocorax pyrrhocorax females in five localities (Scotland, Western Alps, Central Apennines, Sicily and Morocco), focusing on variation at three different level[...]
Article
J. N. Kristiansen, Auteur ;
N. S. Jarrett, Auteur
In recent years, breeding Canada Geese Branta canadensis interior have established themselves in areas of West Greenland previously exploited by Greenland White-fronted Geese Anser albifrons flavirostris only. In this study, diet, behaviour and [...]
Article
Article
B. Erni, Auteur ;
F. Liechti, Auteur ;
L. G. Underhill, Auteur ;
B. Bruderer, Auteur
For the first time an almost complete sample of the seasonal course of nocturnal autumn migration was recorded by a conically scanning pencil-beam radar and was analysed with respect to weather, using a log-linear regression model. A variable ai[...]
Article
R. Schwilch, Auteur ;
T. Piersma, Auteur ;
N. M. A. Holmgren, Auteur ;
L. Jenni, Auteur
After a prolonged period of sleep deprivation, the urge to sleep overrules all other activities. Despite this well-known fact, the occurrence of sleep after naturally occurring sleep deprivation during long non-stop migratory flight in birds has[...]
Article
C. Both, Auteur
Variance in mating systems can only be understood if the fitness consequences of the available options are known for both sexes. In Pied Flycatchers Ficedula hypoleuca it has for long been suggested that females pairing with already mated males [...]
