| Titre : | Ornis Fennica 78(2) - 2001 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
J. Sorjonen, Auteur
According to old Finnish ornithological literature, two different rain-call dialects of the Chaffinch existed in eastern Finland at the end of the 19th century and the beginning of the 20th century. In this work I studied the current existence a[...]
Article
J. Simek, Auteur
Breeding fidelity was studied in Red-backed Shrike, Lanius collurio, in the Czech Republic from 1990 to 1999. The males tend to return more frequently than females, both to the whole research area and to the particular territory. The return rate[...]
Article
R. Probst, Auteur
Article
S. I. Encabo, Auteur ;
E. Barba, Auteur ;
J. A. Gil-Delgado, Auteur ;
J. S. Monros, Auteur
A model has been proposed that predicts a relationship between egg shape and fitness, arguing that eggs will be shaped to fit within the brood patch in an arrangement that is optimal for incubation. Deviations from the "optimal egg shape" would [...]
Article
T. Solonen, Auteur
Studies at various localities in Europe have shown that nest-box populations of tits in urban habitats produce fewer eggs and fledglings than do birds in rural habitats. The results of the present 7-year study on dense urban and moderately dense[...]
