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Volume 13, Number 8—August 2007

Dispatch

Migrating Birds and Tickborne Encephalitis Virus

Jonas Waldenström*†Comments to Author , Åke Lundkvist‡, Kerstin I. Falk‡, Ulf Garpmo*, Sven Bergström§, Gunnel Lindegren‡, Anders Sjöstedt§, Hans Mejlon¶, Thord Fransson#, Paul D. Haemig*, and Björn Olsen*¶
Author affiliations: *Kalmar University, Kalmar, Sweden; †Lund University, Lund, Sweden; ‡Karolinska Institute, Solan, Sweden; §Umeå University, Umeå, Sweden; ¶Uppsala University, Uppsala, Sweden; #Swedish Museum of Natural History, Stockholm, Sweden;

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Figure

Autumn migration directions (arrows) of tree pipits (Anthus trivialis), robins (Erithacus rubecula), redstarts (Phoenicurus phoenicurus), and song thrushes (Turdus philomelos) banded in southeastern Sweden (area indicated by a square) and recovered within 60 days. Directions: Tree pipit, 203.6º, mean vector length = 0.993, n = 10; robin, 220.5º, mean vector length = 0.928, n = 293; redstart, 225.9º, mean vector length = 0.975, n = 52; and song thrush, 218.8º, mean vector length = 0.947, n = 117. Recovery sites of birds banded in southeastern Sweden and reported from areas north of the banding sites in a following year are also shown as indicated in the legend (no recovery from breeding areas is available for tree pipit).

Figure. Autumn migration directions (arrows) of tree pipits (Anthus trivialis), robins (Erithacus rubecula), redstarts (Phoenicurus phoenicurus), and song thrushes (Turdus philomelos) banded in southeastern Sweden (area indicated by a square) and recovered within 60 days. Directions: Tree pipit, 203.6º, mean vector length = 0.993, n = 10; robin, 220.5º, mean vector length = 0.928, n = 293; redstart, 225.9º, mean vector length = 0.975, n = 52; and song thrush, 218.8º, mean vector length = 0.947, n = 117. Recovery sites of birds banded in southeastern Sweden and reported from areas north of the banding sites in a following year are also shown as indicated in the legend (no recovery from breeding areas is available for tree pipit).

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