| Titre : | Ornis Fennica 86(1) - 2009 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
Dorota Czeszczewik, Auteur
I compared structural characteristics between foraging plots of an endangered European species, the White-backed Woodpecker Dendrocopos leucotos (WbW), and random plots in primeval deciduous stands of Bialowieza National Park. I expected that Wb[...]
Article
Vladimir Borchtchevski, Auteur
The May crop contents of Capercaillie (Tetrao urogallus) from a highly disturbed (logged) area of NW Russia are documented for the first time. Plants of the tree-shrub layer and bog plants of the field layer together formed the main part of the [...]
Article
Terje Lislevand, Auteur ;
Ingvar Byrkjedal, Auteur ;
Gaute Bo Gronstol, Auteur
Dispersal and age at first breeding were studied in Northern Lapwings from south Norway. In total, 40 adult birds (two males) and 114 chicks were colour-ringed. There were no sex differences in returning rates of birds ringed as chicks (n = 10 m[...]
Article
Adam Watson, Auteur ;
Mick Marquiss, Auteur ;
Ron Summers, Auteur
We present a more complete and definitive analysis than hitherto of the long runs of data on crossbill abundance and cone-crops in Finland and in Scotland. The abundance of Common Crossbills Loxia curvirostra in Finland was correlated with the a[...]
Article
Teija Aho, Auteur ;
Markku Kuitunen, Auteur ;
Tomi Hakkari, Auteur ;
Jukka Suhonen, Auteur ;
Ari Jantti, Auteur
In biparental bird species the optimal level of parental care of one member of the pair generally depends on its mate's strategy. In monogamy, a predicted response to reduced parental care by one parent is incomplete compensation by its partner.[...]
