| Titre : | Ornis Fennica 80(4) - 2003 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
F. Alvarez, Auteur
Article
K. Kuitunen, Auteur ;
K. Saarinen, Auteur ;
J. Jantunen, Auteur ;
S. Saarnio, Auteur
The intensification of agricultural management has reduced the populations of farmland birds throughout Europe, including Finland. During the past 50 years, changes in agricultural practices have been more dramatic in Finnish Karelia than in the[...]
Article
V. E. Sidorovich, Auteur ;
D. I. Shamovich, Auteur ;
I. A. Solovey, Auteur ;
G. O. Lauzhel, Auteur
The dietary structure and distribution patterns of the Ural Owl Strix uralensis under conditions of different food supply (seasonal and year-to-year changes and landscape-related differences) in the coniferous small-leaved transitional forest of[...]
Article
P. Fayt, Auteur
The effect of food supply on the Three-toed Woodpecker Picoides tridactylus breeding density and productivity was investigated by comparing the pattern of annual changes in prey abundance in habitats with declining vs. stable woodpecker populati[...]
Article
A. Leito, Auteur ;
J. Truu, Auteur ;
A. Leivits, Auteur ;
I. Ojaste, Auteur
The aim of this study is to analyse population trends and distribution of the breeding population of the Common Crane in Estonia. The population size and density of the Common Crane in Estonia has increased several times over the last 30 years ([...]
