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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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Table

Bird species infested with ticks during the spring and autumn migration periods

Scientific name Common name Spring
Autumn
No. infested No. ticks Infestation rate (ticks/infested bird) No. infested No. ticks Infestation rate (ticks/infested bird)
Accipiter nisus Eurasian sparrowhawk 1 2 2.0
Acrocephalus palustris Marsh warbler 1 1 1.0
Acrocephalus scirpaceus European reed warbler 1 1 1.0
Alauda arvensis Eurasian skylark 1 6 6.0
Anthus trivialis Tree pipit 1 1 1.0 10 28 2.8
Carduelis cannabina Common linnet 1 1 1.0
Carduelis chloris European greenfinch 6 6 1.0 1 1 1.0
Carduelis flammea Common redpoll 1 1 1.0
Carduelis spinus Eurasian siskin 1 1 1.0
Carpodacus erythrinus Common rosefinch 1 1 1.0
Certhia familiaris Eurasian treecreeper 2 2 1.0
Dendrocopos major Great spotted woodpecker 1 8 8.0
Emberiza schoeniclus Common reed bunting 1 1 1.0
Erithacus rubecula European robin 35 58 1.7 153 404 2.6
Fringilla coelebs Common chaffinch 1 1 1.0 1 8 8.0
Hippolais icterina Icterine warbler 2 15 7.5
Lanius collurio Red-backed shrike 2 7 3.5
Luscinia luscinia Thrush nightingale 2 5 2.5 2 4 2.0
Luscinia svecica Bluethroat 3 5 1.7 2 3 1.5
Parus caeruleus Eurasian blue tit 2 3 1.5 4 11 2.8
Parus major Great tit 2 2 1.0 18 34 1.9
Phoenicurus phoenicurus Common redstart 3 6 2.0 9 18 2.0
Phylloscopus sibilatrix Wood warbler 1 1 1.0
Phylloscopus trochilus Willow warbler 3 3 1.0 16 18 1.1
Prunella modularis Dunnock 2 6 3.0 2 3 1.5
Pyrrhula pyrrhula Eurasian bullfinch 5 8 1.6
Regulus regulus Goldcrest 1 1 1.0
Sturnus vulgaris Common starling 10 19 1.9
Sylvia atricapilla Blackcap 1 2 2.0 6 6 1.0
Sylvia borin Garden warbler 1 1 1.0
Sylvia communis Common whitethroat 6 13 2.2 12 33 2.8
Sylvia curruca Lesser whitethroat 2 4 2.0 6 7 1.2
Sylvia nisoria Barred warbler 2 3 1.5 1 1 1.0
Troglodytes troglodytes Winter wren 7 16 2.3 11 19 1.7
Turdus iliacus Redwing 8 17 2.1 2 5 2.5
Turdus merula Common blackbird 24 86 3.6 20 89 4.4
Turdus philomelos Song thrush 7 12 1.7 18 131 7.3
Turdus pilaris
Fieldfare
1
4
4.0

2
2
1.0
Total 121 256 326 899

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