| Titre : | Ornithologischer Anzeiger 44(1) - JUL 2005 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
Manfred Lieser, Auteur ;
Marek Zakrzewski, Auteur
In four years we collicted information about the reproductive biology of ptarmigan in North-East Greenland. The data correspond well to that from other parts of the species' range. The average clutch size was 8.7 (7-12) eggs. The earliest day of[...]
Article
This is a survey of the development of the Red-backed Shrike population Lanius collurio in Dachau/Bavaria and the surrounding area since 1985. Up to 1995 registration only took place in a small scale because at that time nobody had thought about[...]
Article
Manfred Kraus, Auteur ;
Werner Krauss, Auteur
This is a report on 16 Anserinae which were observed at the "Frankonian Pond Area". Due to the assistance of several reliable helpers 3374 data could be evaluated. The three species of breeding birds, Mute Swan, Greylag Goose and Canada Goose th[...]
Article
Marion Weisser, Auteur ;
Christoph Randler, Auteur
Brood rearing behaviour of feral Greylag Geese (Anser anser) was observed at Max-Eyth-See in Stuttgart, Germany, during the breeding season of 2004 by M. Weisser. We aimed at testing three hypotheses: 1) division of labour between males and fema[...]
