| Titre : | Vogelwarte 43(3) - AUG 2005 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
Martin Boschert, Auteur
Dissertation an der Eberhard Karls Universitat Tubingen, Fakultat fur Biologie, Zoologisches Institut (2004) betreut durch Prof. Dr. Dieter Ammermann und Prof. Dr. Hans-Heiner Bergmann, Universitat Osnabruck, FB Biologie/Ethologie.
Article
Till Toepfer, Auteur
Although records of albinistic or partial albinistic birds are not seldom there are only few published cases of complete albinism in the Tree Sparrow Passer montanus. This article describes such a bird found near Dresden in September 2001. The S[...]
Article
Christoph Randler, Auteur
During both feeding and preening, coots Fulica atra regularly interrupt their activities to visually scan their environment. This behaviour is considered to be used for detecting predators. Animals in groups lower their individual vigilance sinc[...]
Article
Marc I. Foerschler, Auteur
Between 2000 and 2002 a male phenotypical intermediate hybrid between redstart Phoenicurus phoenicurus and black redstart P. ochruros. was observed regularly during the breeding season in the Northern Black Forest (Ruhestein, 950 m NN; district [...]
Article
Wolfgang Winkel, Auteur ;
Doris Winkel, Auteur
In numerous study areas near Braunschweig/Lower Saxony data of Nuthatches, breeding in artificial nestboxes, were recorded since the early 1950s. In 2004 the first evidences of second broods for this region could be established. In botl cases of[...]
Article
Guenther Busche, Auteur
Numbers of migrating Ortolan Buntings decreased dramatically in the German Bight in the period 1964-2000. Ortolan Buntings occur every year during spring and autumn migration. Annual numbers fluctuate between 5 and 76 individuals (average 34). T[...]
Article
Georg F. J. Armbruster, Auteur ;
Deborah Renz, Auteur ;
Manuel Schweizer, Auteur
We presently develop a data bank on visible diurnal spring migration. Data were collected in three spring periods (1984 - 1986) at an exposed observation point at the bank of Lake Constance (Bodensee, southern Germany). 831 observation hours wer[...]
Article
Markus Peintinger, Auteur ;
Siegfried Schuster, Auteur
Global change affects the timing of bird migration. It presumed (and has been shown) that, (1) species arrived earlier in spring and that (2) this response to climate change is stronger in short-distance than in long-distance migratory species. [...]
Article
Horst Seeler, Auteur ;
Ernst Kniprath, Auteur
Within 3 years a female barn owl had 5 successful broods with 5 different males and moved between all broods. For a better judgment of the circumstances of the divorces the origin of the males, their fate after the divorce and also the origin of[...]
