| Titre : | Ornis Fennica 80(3) - 2003 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
M. Kilpi, Auteur ;
M. Ost, Auteur ;
A. Lehikoinen, Auteur ;
A. Vattulainen, Auteur
We recorded the sex ratio of adult Eiders migrating into the Gulf of Finland during spring (March-May) 2001 by visual observations at Hanko Bird Observatory, SW Finland. A total of 22 509 males and 17 234 females were sexed during migration, giv[...]
Article
M. Odden, Auteur ;
P. Wegge, Auteur ;
S. Eliassen, Auteur ;
M. H. Finne, Auteur
In boreal forests during spring, the highly size-dimorphic Capercaillie Tetrao urogallus changes its diet from pine needles to more nutritious ground forage. At Varaldskogen in southeast Norway, we compared the dietary shift of males and females[...]
Article
E. S. Bridge, Auteur
Quantifying the costs and benefits of flight feather replacement is vital to our understanding of avian moulting patterns and life histories. This study investigated the effects of simulated primary moult on the flight ability of pigeons (Columb[...]
Article
J. M. Roberge, Auteur ;
S. Svensson, Auteur
Using bird atlas data from south-central Sweden and information on survey effort for the corresponding 5 x 5 km grid squares, we assessed how much time is required to get reliable presence/absence data for forest birds. We restricted the analyse[...]
Article
M. Piha, Auteur ;
T. Pakkala, Auteur ;
J. Tiainen, Auteur
The agricultural environments of forest-dominated northern Europe are different from those in southern Europe. One could expect corresponding differences in the ecology of farmland birds such as the Skylark. We studied the habitat characteristic[...]
