| Titre : | Ardea 97(1) - SPR 2009 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
Ralf H. E. Mullers, Auteur ;
Joost M. Tinbergen, Auteur
Cape Gannets Morus capensis are declining in numbers in all breeding colonies at the southern African west coast, potentially caused by deteriorating food availability. The behavioural responses of individuals to changing conditions can provide [...]
Article
Sjoerd Duijns, Auteur ;
Jacintha G. B. van Dijk, Auteur ;
Bernard Spaans, Auteur ;
Joop Jukema, Auteur ;
Willem F. de Boer, Auteur ;
Theunis Piersma, Auteur
Different spatial distributions Of food abundance and predators may urge birds to make a trade-off between food intake and danger. Such a trade-off might be solved in different ways in migrant birds that either follow a time-minimizing or energy[...]
Article
Kerstin Kober, Auteur ;
Franz Bairlein, Auteur
The tidal flats of the Bragantinian Peninsula in the tropical part of Brazil harbour wintering and migratory nearctic shorebirds in very high densities, whereas the benthic food supply is very low. In 2001 and 2002 a study was conducted on the h[...]
Article
Joseph B. Williams, Auteur ;
B. I. Tieleman, Auteur ;
Mohammed Shobrak, Auteur
As part of a study on the core body temperature (T(b)) of desert birds, we purposed to use temperature-sensitive implantable radio transmitters. Because of the difficulty in recapturing these birds, we needed to know if these electronic devices [...]
Article
Peter Adamik, Auteur ;
Jan Husek, Auteur ;
Jaroslav Cepak, Auteur
Several 19th and 20th century studies on Common Cuckoo Cuculus canorus brood parasitism suggest that Red-backed Shrikes Lanius collurio used to be one of its common hosts in central Europe. However, since the late 1960s parasitism ceased to occu[...]
Article
Maria del Mar Delgado, Auteur ;
Vincenzo Penteriani, Auteur ;
Vilis O. Nams, Auteur
Movement strategies are one of the primary mechanisms underlying animal survival. Despite the impressive amount of studies on animal movement during successive stages in the life history in birds, little is known about the characteristics of mov[...]
Article
Caroline Isaksson, Auteur
Carotenoids are interesting in avian ecology due their dietary origin and the resulting environmental dependence of certain functions and traits such as plumage pigmentation and the immune system. Carotenoids are frequently assumed to be limited[...]
Article
Jaroslaw Wiacek, Auteur
Nest site selection of the ground-nesting Montagu's Harrier was studied in a natural habitat in eastern Poland, the Chelm Calcareous Marshes (850 ha). All nests in the study area were placed in the sedge community Cladietum marisci. The water at[...]
Article
Alfréd Trnka, Auteur ;
Péter Batáry, Auteur ;
Pavol Prokop, Auteur
We studied the rate of predation on artificial and natural nests of Great Reed Warbler Acrocephalus arundinaceus in two contrasting vegetation types, reed Phragmites australis and reed mace Typha angustifolia beds. Reed provided thinner and tall[...]
Article
Flemming Ravn Merkel, Auteur ;
Anders Mosbech, Auteur ;
Frank Riget, Auteur
We studied the impact of human disturbances on the feeding activities of Common Eiders Somateria mollissima wintering in Southwest Greenland. Eider activity and human disturbances (fast moving, open boats) were recorded during 9 days of observat[...]
Article
Article
Nicolas Vanermen, Auteur ;
Eric W. M. Stienen, Auteur ;
Brecht de Meulenaer, Auteur ;
Karl Van Ginderdeuren, Auteur ;
Steven Degraer, Auteur
We studied abundance and feeding behaviour of wintering Sanderling Calidris alba at five beaches along the Belgian coast, and focused on the role of polychaete worms in their diet. On average 10.0 Sanderlings were present per km stretched beach,[...]
Article
Jutta Leyrer, Auteur ;
Sytze Pruiksma, Auteur ;
Theunis Piersma, Auteur
Observations of departing Siberian-breeding Red Knots Calidris canutus canutus from their central staging site during northward migration, the Schleswig-Holstein Wadden Sea, Germany, in early June 2008, challenge the established notion that depa[...]
Article
Chiyeung Choi, Auteur ;
Xiaojing Gan, Auteur ;
Qiang Ma, Auteur ;
Kejia Zhang, Auteur ;
Jiakuan Chen, Auteur ;
Zhijun Ma, Auteur
We compared seasonal variations in body condition and fuel deposition patterns of five calidrid sandpipers at Chongming Dongtan (eastern China), a stopover site in the East Asian-Australasian Flyway. We tested the hypothesis that long-distance m[...]
Article
Ole Thorup, Auteur ;
Sami Timonen, Auteur ;
Donald Blomqvist, Auteur ;
Lars-Åke Flodin, Auteur ;
Paul Eric Jonsson, Auteur ;
Mikael Larsson, Auteur ;
Veli-Matti Pakanen, Auteur ;
Martti Soikkeli, Auteur
The population of Baltic Dunlins Calidris alpina schinzii is very small and is declining rapidly. To optimize conservation efforts, knowledge about the location of staging and wintering sites is crucial. As part of intensive studies on Dunlins i[...]
Article
Juan Arizaga, Auteur ;
M. Angeles Hernandez, Auteur ;
Jose Rivas, Auteur ;
Rafael Miranda, Auteur
Biometry of Iberian Dippers Cinclus cinclus has typically been addressed from a geographic perspective, often considering small local populations. In this work, we explored environmental correlates of among-population phenotypic variation in Dip[...]
