Volume 13, Number 8—August 2007
Dispatch
Migrating Birds and Tickborne Encephalitis Virus
Jonas Waldenström*†
, Åke Lundkvist‡, Kerstin I. Falk‡, Ulf Garpmo*, Sven Bergström§, Gunnel Lindegren‡, Anders Sjöstedt§, Hans Mejlon¶, Thord Fransson#, Paul D. Haemig*, and Björn Olsen*¶
, Åke Lundkvist‡, Kerstin I. Falk‡, Ulf Garpmo*, Sven Bergström§, Gunnel Lindegren‡, Anders Sjöstedt§, Hans Mejlon¶, Thord Fransson#, Paul D. Haemig*, and Björn Olsen*¶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 | ||||
