| Titre : | Vogelwelt (Die) 126(1) - 2005 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
Johannes Wahl, Auteur ;
Christoph Sudfeldt, Auteur
Since 1966/67 waterbirds have been counted in Germany as part of the International Waterbird Census. These data, collected by mostly volunteer observers, were analysed for seven species of dabbling ducks using data from 35 years up to 2002. As s[...]
Article
Stefan Garthe, Auteur ;
Philipp Schwemmer, Auteur
Since the year 2000, several larger and smaller projects could be raised within the framework of the Seabirds at Sea Program. They led to a considerable improvement of the data basis as well as enabled extensive analyses. New surveys provided su[...]
Article
Ubbo Mammen, Auteur ;
Michael Stubbe, Auteur
Based on the research project,,monitoring of raptors and owls in Europe" and relevant literature, the situation of the breeding populations of 26 raptor and owl species in the years 1999-2002 is summarized. Trends and fluctuations of population [...]
Article
Martin Boschert, Auteur
The population sizes of 78 rare or scarce breeding bird species in Germany are presented for the years 1997 to 2003. Additionally, 16 further species are listed of which breeding attempts or observations during the breeding season have been reco[...]
