| Titre : | Ardea 97(3) - FAL 2009 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
Myles H. M. Menz, Auteur ;
Paul Mosimann-Kampe, Auteur ;
Raphaël Arlettaz, Auteur
The Ortolan Bunting Emberiza hortulana has suffered a general decline across much of Western Europe in recent decades. In Switzerland, only one population remains in sub-Mediterranean shrub-steppe on the south-facing slopes of the Rhone Valley ([...]
Article
Roine Strandberg, Auteur ;
Raymond H. G. Klaassen, Auteur ;
Patrik Olofsson, Auteur ;
Thomas Alerstam, Auteur
We analysed satellite tracking data to reveal the daily travel schedules of Hobbies Falco subbuteo migrating between northern Europe and southern Africa. By comparing movements during short-time intervals of 1-8 h at different times of the day b[...]
Article
Dik Heg, Auteur
Article
Kai Abt, Auteur ;
André Konter, Auteur
Ring recoveries of dead individuals from all over Europe and covering a period of 57 years were collected to study survival of Great Crested Podiceps cristatus (n = 433), Black-necked P. nigricollis (n = 95) and Little Grebes Tachybaptus ruficol[...]
Article
Karen L. Krijgsveld, Auteur ;
Kirsten Akershoek, Auteur ;
Femke Schenk, Auteur ;
Femke Dijk, Auteur ;
Sjoerd Dirksen, Auteur
We studied collision rate of birds with modern, large 1.65 MW wind turbines in three wind farms in The Netherlands during three months in autumn and winter. Collision rate, after correction for retrieval and disappearance rate, was 0.08 birds pe[...]
Article
Josef Hofer, Auteur ;
Fränzi Korner-Nievergelt, Auteur ;
Pius Korner-Nievergelt, Auteur ;
Matthias Kestenholz, Auteur ;
Lukas Jenni, Auteur
Many waterbird species assemble in large aggregations during winter. In most species, these aggregations are generally thought to be composed of individuals not familiar to each other. In this study, we analysed mark-recapture data of Tufted Duc[...]
Article
Peter Sunde, Auteur ;
Peter Odderskaer, Auteur ;
Kurt Storgaard, Auteur
In a Danish landscape with relatively high (134/km(2)) but variable human density, 86% of 213 incubating Common Buzzards Buteo buteo flushed from the nest at distances of 0-200 m in response to a person approaching on foot. Flight distances were[...]
Article
Juan Arizaga, Auteur ;
Emilio Barba, Auteur
Our aim was to assess to what extent detection of differential timing of passage in migrant birds depends on the sampling frequency (SF). We determined if Blackcaps Sylvia atricapilla performed differential migration by age and sex when passing [...]
Article
George Sangster, Auteur ;
Arnoud B. van den Berg, Auteur ;
Andre J. van Loon, Auteur ;
C. S. Roselaar, Auteur
This is the third update on the taxonomy of species and higher taxa on the Dutch List since Voous (1977). It summarizes decisions made by the Commissie Systematiek Nederlandse Avifauna (CSNA) between Jan 2004 and Dec 2008. Changes in this report[...]
Article
Migration patterns of adult and juvenile Lesser Black-backed Gulls Larus fuscus from northern Norway
Morten Helberg, Auteur ;
Geir H. Systad, Auteur ;
Ingve Birkeland, Auteur ;
Nils H. Lorentzen, Auteur ;
Jan O. Bustnes, Auteur
To explore migration patterns of Lesser Black-backed Gulls Larus fuscus breeding in northern Norway, this study presents resightings of 16 adult and 83 juvenile birds marked in this region. Adults of the endangered nominate subspecies L. f. fusc[...]
Article
Ian MacGregor-Fors, Auteur ;
Leopoldo Vazquez, Auteur ;
Jorge H. Vega-Rivera, Auteur ;
Jorge E. Schondube, Auteur
We report two recordings of Great-tailed Grackles Quiscalus mexicanus in the Chamela Biosphere Reserve, which is an important conservation area for pristine tropical dry forests in West Mexico. These recordings are important for three main reaso[...]
Article
Magdalena Remisiewicz, Auteur ;
Anthony J. Tree, Auteur ;
Les G. Underhill, Auteur ;
Anna Gustowska, Auteur ;
P. Barry Taylor, Auteur
Migrant waders using freshwater habitats are hypothesized to have slower primary moult than waders using coastal habitats. We chose the Wood Sandpiper Tringa glareola as a representative species using the freshwater habitats and compare its moul[...]
Article
Martijn Van De Pol, Auteur ;
Bruno J. Ens, Auteur ;
Kees Oosterbeek, Auteur ;
Lyanne Brouwer, Auteur ;
Simon Verhulst, Auteur ;
Joost M. Tinbergen, Auteur ;
Anne L. Rutten, Auteur ;
Martin de Jong, Auteur
Eurasian Oystercatchers Haematopus ostralegus ostralegus are a classic example of individual feeding specialization. Feeding specialization causes morphological differentiation in Oystercatchers' bill shapes due to varying degrees of abrasion as[...]
Article
Luc te Marvelde, Auteur ;
Peter L. Meininger, Auteur ;
Renaud Flamant, Auteur ;
Niels J. Dingemanse, Auteur
Survival and reproductive rates often decrease with increasing population density. Such negative density dependence reflects a changing net balance between the benefits and costs of presence of others with increasing density. When densities are [...]
