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Article
Jan Tottrup Nielsen, Auteur ; Jan Drachmann, Auteur
Article
Based on prey items and homing pigeon rings found in Goshawk territories during 21 years in a 2417 km2 study area in northern Jutland, the predation on horning pigeons by Goshawks was investigated. A total of 19670 prey animals were identified a[...]
Article
Goshawks and Pheasants: experience from experimental trapping and transport away of hawks from Pheasant release sitesThe practice of releasing Pheasants for hunting purposes has often led to "regulation" of predators. When large-scale release of[...]
Article
Article
A long-term study of Sparrowhawks Accipiter nisus in northern Jutland, Denmark, was conducted during 1977-1997. Recoveries of 401 nestlings ringed during the project - 188 males, 183 females - were analysed. The pattern and probability of recove[...]
Article
The diet af Goshawks Accipiter gentilis in Vendsyssel was determined from prey remains collected at plucking sites in autumn (September-November) and winter (December-February) 1977-2001. A total of 1826 prey animals, representing 45 bird specie[...]
Article
Jan Tottrup Nielsen, Auteur ; Jan Drachmann, Auteur
Article
Article
Data were collected during 1977-1997 in a 2417 km(2) study area in Vendsyssel (see Nielsen 2004a for details on methods and study area). Time of laying was estimated from nestling age at ringing, based on wing measurements, and on incubation per[...]
Article
Anders Pape Moller, Auteur ; Tapio Solonen, Auteur ; Patrik Byholm, Auteur ; Esa Huhta, Auteur ; Jan Tottrup Nielsen, Auteur ; Risto Tornberg, AuteurPredators impose strong selection on their prey, regulate prey populations and engage in coevolutionary interactions with their prey. The intensity of selection and the strength of coevolutionary interactions will depend on how stringent predato[...]
