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- W2181824759 abstract "In Northern Europe the Reed Warbler Acrocephalus scirpaceus has had a long period of expansion; in Sweden since the nineteenth century (Svensson et al. 1999). The breeding range has expanded successively from a start in SW Sweden and the increasing Swedish Reed Warbler population has become the second largest in Europe after the Romanian one (Hagemeijer & Blair 1997). During the 1990s, the population was estimated at about 500,000 to 600,000 pairs (Stolt 1999). The Reed Warbler is reported to have bred in Finland only since the 1920s (Cramp 1992) and in Norway since 1947 (Haftorn 1971). In Continental Europe there is a migration divide between Reed Warblers starting autumn migration in a south-western direction and others starting in a south-eastern direction. Those from France, Germany and Poland go south-west, while those from the Neusiedler See in Austria, from Hungary and Slovakia go south-east (Zink 1973, Schlenker 1988). Regarding North European Reed Warblers, Rendahl (1960) could report only two recoveries of Reed Warblers ringed in Sweden. Even 25 years ago, little was known about the Migration routes of expanding North European Reed Warbler populations were investigated by means of more than 2500 recoveries of birds ringed in Norway, Sweden and Finland. We found different autumn directions: from Norway SSW 195°–200°, from Sweden SSW–SW 211°–216°, and from Finland SW 220°–226°. Recoveries in Belgium showed that the autumn routes from the three countries passed over different areas at the latitude of Belgium. They converged at the Iberian Peninsula and continued in new directions through Morocco towards winter quarters in tropical West Africa (recoveries in Mauritania, Mali, Ghana, Ivory Coast and Liberia). In autumn, directions varied more in firstyear than in older birds. In spring, the route was more direct and narrow than in autumn. Stopover in NW Africa, compared with the Iberian Peninsula, was more frequent in spring than in autumn. The SW directed routes of North European birds were similar to those of other West European populations, but differed from the SE directed autumn migration of the Hungarian, Slovakian and eastern Austrian populations." @default.
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- W2181824759 date "2005-01-01" @default.
- W2181824759 modified "2023-09-27" @default.
- W2181824759 title "Migration routes of North European Reed Warblers Acrocephalus scirpaceus Flyttningsmönster hos nordeuropeiska rörsångare Acrocephalus scirpaceus" @default.
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