| Titre : | Ornis Fennica 86(4) - 2009 |
| Type de document : | Bulletin |
| Paru le : | 01/12/2009 |
Dépouillements
Article
Katarzyna Wojczulanis-Jakubas, Auteur ;
Dariusz Jakubas, Auteur ;
Lech Stempniewicz, Auteur
The evolution of sex-specific reproductive behavior among species with biparental care promotes sexual conflict over care. Such conflict may be less intense in species with long-term pair bonds. We examined sex-specific patterns of care during t[...]
Article
Andrzej Ciereszko, Auteur ;
Artur Kowalczyk, Auteur ;
Ewa Lukaszewicz, Auteur ;
Andrzej Krzywinski, Auteur ;
Armin Kobus, Auteur ;
Grzegorz J. Dietrich, Auteur
Article
Gombobaatar Sundev, Auteur ;
Reuven Yosef, Auteur ;
Odkhuu Birazana, Auteur
We evaluated the nutritional condition of nestling Upland Buzzards by using the non-invasive ptilochronology technique. Recognizing that each growth bar on a feather represents 24h of growth, this technique uses the width of growth bars as an in[...]
Article
Jan Riegert, Auteur ;
Matej Loevy, Auteur ;
Drahomira Fainova, Auteur
We studied the dietary composition of urban populations of Common Kestrels (Falco tinnunculus) and Long-eared Owls (Asio otus) under fluctuating vole abundance in Ceske Budejovice during 2002-2005. Common Voles were the dominant prey. In poor vo[...]
Article
Grzegorz Orlowski, Auteur ;
Zbigniew Kasprzykowski, Auteur ;
Zbigniew Zawada, Auteur ;
Grzegorz Kopij, Auteur
Stomach content was examined in 53 out of 56 dead Rook Corvus frugilegus nestlings found in several breeding colonies in Poland. The stomachs contained 29 different types of items, 46.5% of which were animal, 12.2% plant and 41.2% mineral (small[...]
