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Article
Thomas Schaefer, AuteurMice are often assumed to prey on bird nests. However, there are only few actual observations of mice taking eggs or young birds from nests, or they were obtained with artificial nests. Bures (1997) showed in videotaped experiments that unguarde[...]
Article
Thomas Schaefer, Auteur ; Francisco Pulido, Auteur ; Peter Berthold, Auteur
Article
Thomas Schaefer, AuteurThe Skylark is generally considered to be a bird of open habitats avoiding woody vegetation and any kind of vertical structures. In addition, recent studies on intensively used arable lands suggest that Skylarks require patches of open ground. H[...]
Article
Thomas Schaefer, Auteur ; Georg Heine, AuteurIn order to determine predators of baited nests, we developed a photo trap system that bypasses undesired functions of simple AF rangefinder cameras. The system can be fitted with different triggers such as motion sensitive devices and light bar[...]
