Scientific Journal of the BirdLife Hungary

A Magyar Madártani és Természetvédelmi Egyesület tudományos folyóirata

Ornis Hungarica. vol.4. (1994) p.31-37.

Autumn migration dynamics of the Sedge Warbler (Acrocephalus schoenobaenus) in Hungary
J. Gyurácz and T. Csörgő

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Abstract:

More than 3500 Sedge Warblers were trapped at "Actio Hungarica" camps of the Hungarian Ornithological and Nature Conservation Society in 1990. The migration dynamics of the Sedge Warbler is described in this paper. There were significant differences in the timing of migration between the three stopover sites under study, The median dates were: 17 August at 6csa (47'19'N, 19'13'E), 19 August at Fenékpuszta (46o44' N, 17014' E), and 16 August in Sumony (45'58'N, 17'56'E). Adults usually migrate earlier than juveniles. The birds were equally likely to be recaptured at each stopover site, but stopover time differed between stopover sites. The northern populations come from Southern Scandinavia and the Baltic region and migrate in largest numbers at the end of August and in early September in the Carpathian Basin.