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Auteur N. Kjellen |
Documents disponibles écrits par cet auteur (4)
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Article
N. Kjellen, Auteur ; G. Roos, AuteurThe autumn migration of raptors at Falsterbo, Sweden has been studied since the early 1940s, and from 1973 standardized counts were made. Here we present data for 15 species over a 39-year period from 1942-97. These are discussed in the context [...]Article
M. Hake, Auteur ; N. Kjellen, Auteur ; T. Alerstam, AuteurAutumn migration routes and orientation of Swedish Ospreys Pandion haliaetus were studied by satellite tracking of 18 birds. Of these. 13 could be followed during the entire migration (6 females, 5 males and 2 juveniles). Most birds migrated acr[...]Article
N. Kjellen, Auteur ; M. Hake, Auteur ; T. Alerstam, AuteurBreeding Ospreys were studied in southern Sweden and 13 birds were tracked by satellite telemetry on autumn migration to the African wintering grounds. This was supplemented with studies of migrating birds at Falsterbo and radar trackings From s[...]