| Titre : | Ornis Fennica 89(2) - 2012 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
Jaana Kekkonen, Auteur ;
Ilpo K. Hanski, Auteur ;
Risto A. Vaisanen, Auteur ;
Jon E. Brommer, Auteur
Urbanization has led to increasing amounts of pollutants which can harm organisms that share our living environment. In Finland, the House Sparrow has declined by two thirds during the last couple of decades. One hypothesis suggested to lead to [...]
Article
Yahkat Barshep, Auteur ;
Wlodzimierz Meissner, Auteur ;
Les G. Underhill, Auteur
Recent shifts in the timing of migration and breeding have been attributed to climate variation in some migratory birds. However, the divergent patterns in the timing of autumn migration among different bird species suggest a significant role of[...]
Article
Johan Ekroos, Auteur ;
Anthony D. Fox, Auteur ;
Thomas K. Christensen, Auteur ;
Ib K. Petersen, Auteur ;
Mikael Kilpi, Auteur ;
Jón E. Jónsson, Auteur ;
Martin Green, Auteur ;
Karsten Laursen, Auteur ;
Anja Cervencl, Auteur ;
Peter de Boer, Auteur ;
Leif Nilsson, Auteur ;
Wlodzimierz Meissner, Auteur ;
Stefan Garthe, Auteur ;
Markus Ost, Auteur
We report on the status of the Baltic/Wadden Sea flyway Eider population based on trends in breeding and wintering numbers throughout the region, supplemented by changes in the sex ratio and proportion of young Eiders as monitored in the Danish [...]
Article
Grzegorz Hebda, Auteur ;
Tomasz Wesolowski, Auteur
High flea (Siphonaptera) loads are typically found in birds' nests in nest boxes. Ten years of observations, involving Marsh Tit Parus palustris, Great Tit Pants major and Blue Tit Pants caeruleus nests in tree cavities in primeval forests of Bi[...]
Article
Eduardo Garcia-Del-Rey, Auteur ;
Mark J. Whittingham, Auteur
Farmland birds within arable land are of conservation concern in Europe, but little is known about their ecology in the oceanic islands of the Mediterranean Basin (Macaronesia). We report here that, during two consecutive winters and within the [...]
Article
Marja Isomursu, Auteur ;
Osmo Ratti, Auteur ;
Tuija Liukkonen, Auteur ;
Pekka Helle, Auteur
Inbreeding can have a negative influence on several life-history traits as well as disease resistance in birds and mammals through different genetic mechanisms. Endangered and declining populations may be at particular risk for inbreeding. The l[...]
Article
Lykke Pedersen, Auteur ;
Marten Geertsma, Auteur ;
Anders P. Tottrup, Auteur
When breeding, food availability is essential for optimal reproductive output and is potentially one of the main factors limiting breeding success, especially in single brooded long-distance migratory birds. In this study, we examined the diet ([...]
