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Article
The size and migratory origins of the population of Hen Harriers Circus cyaneus wintering in England
Andrew D. M. Dobson, Auteur ; Michele Clarke, Auteur ; Nils Kjellen, Auteur ; Roger Clarke, AuteurCapsule The majority of Hen Harriers Circus cyaneus that spend the winter in England are derived from the British breeding population. Aims To investigate the popular hypothesis that Hen Harriers which over-winter in England are derived principa[...]
Article
Kasper Thorup, Auteur ; Thomas Alerstam, Auteur ; Mark Fuller, Auteur ; Mikael Hake, Auteur ; Nils Kjellen, Auteur
Article
During the years 1986-1997 the raptor migration over the Falsterbo peninsula was counted during the period from 1 August until 20 November. All birds were aged and sexed as far as possible. The overall seasonal timing ad total proportions of dif[...]
Article
The Red Kite was a common breeder in the southern third of Sweden up to the middle of the last century. Alter a steep decline it was protected in 1919. Estimates of the Swedish population are given in Tab. 1. The Swedish Red Kite Project has bee[...]
Article
Roine Strandberg, Auteur ; Thomas Alerstam, Auteur ; Mikael Hake, Auteur ; Nils Kjellen, Auteur
