| Titre : | Vogelwelt (Die) 124(4) - 2003 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
Herwig Zang, Auteur
Annual beech Fagus sylvatica crop varies greatly between four levels (0 = low to 3 = high). In a study area in the Harz mountains, beech crops were intermediate (levels 1, 2) from 1981 to 1991 with low fluctuations, but between 1992 and 2002 ful[...]
Article
Steffen Weiss, Auteur
In a contiguous alder forest tract of 1,000 ha in the 'Oberspreewald' (Spreewald Biosphere Reserve) in Brandenburg, NE Germany, a survey of Middle Spotted Woodpecker was carried out by use of a tape lure. A total of 42 territories was mapped, 39[...]
Article
Janusz Stepniewski, Auteur
During a study of Bearded Reedling at Lake Takern in central Sweden, I observed several cases, in which an old nest was re-used as a platform for a new nest built on top of the old one. This occurred both within the same season (2 cases) and bet[...]
Article
Volker Dierschke, Auteur
During autumn migration stopovers on the offshore island Helgoland (North Sea), Northern Wheatears Oenanthe oenanthe varied behaviour with respect to foraging conditions. In both types of habitat studied (wrack beds along the beach, grassland), [...]
Article
Janusz Stepniewski, Auteur
During a study of Bearded Reedling at Lake Takern in central Sweden, I observed several cases, in which an old nest was re-used as a platform for a new nest built on top of the old one. This occurred both within the same season (2 cases) and bet[...]
Article
Mike Heddergott, Auteur
Parasitation of nestling Kestrels by the blood-sucking fly Carnus hemapterus was studied during the years 1996-2002 in several regions of Germany. A total of 410 nestlings our of 96 broods were carefully checked for parasites. Results are analys[...]
