| Titre : | Ornis Fennica 83(2) - 2006 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
Marc I. Foeschler, Auteur ;
Lothar Foerschler, Auteur ;
Ulrich Dorka, Auteur
Annual population abundances from 1992 to 2002 of Siskins Carduelis spinus, Common Crossbills Loxia curvirostra and Citril Finches Carduelis citrinella were studied in relation to flowering intensity of spruce Picea abies. We used point count me[...]
Article
Osmo Ratti, Auteur ;
Ulriikka Ojanen, Auteur ;
Pekka Helle, Auteur
Black flies (Simuliidae) have been observed to harass Black Grouse (Tetrao tetrix) in northern Finland during summer. We studied experimentally whether group size affects the attack rate of black flies on Black Grouse. The increase in flock size[...]
Article
Josef Rajchard, Auteur ;
Jan Prochazka, Auteur ;
Pavel Kindlmann, Auteur
We analyzed the effect of average monthly temperatures and precipitations (May-July) and of the North Atlantic Oscillation (NAO) on the breeding success of the Common Swift (Apus apus) in Trebon (South Bohemia) from 1980-1997. Breeding success c[...]
Article
Christopher F. Mason, Auteur ;
Tanja A. Hofmann, Auteur ;
Sheila M. Macdonald, Auteur
Most river corridors have been highly modified and managed but they still support diverse assemblages of birds. To aid conservation it is important to know which river corridor habitats support the greatest diversity and numbers of bird species.[...]
Article
Antero Hakala, Auteur ;
Kauko Huhtala, Auteur ;
Asko Kaikusalo, Auteur ;
Erkki Pulliainen, Auteur ;
Seppo Sulkava, Auteur
The Snowy Owl has, during the last 70 years, bred in Finnish Lapland only in 1974,1987, and 1988. We collected diet material directly from nest bowls, and from pellets found around the nests and at the resting sites of adults and young. These th[...]
Article
Milena Krystofkova, Auteur ;
Alice Exnerova, Auteur ;
Jiří Porkert, Auteur
Spatial foraging activity and feeding of broods was studied in nine pairs of Common Redstart (Phoenicurus phoenicurus) breeding in nest boxes in pine forest. The effect of nestling age on feeding rate was not significant. The number of feedings [...]
