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Cecilia Kullberg,1 Sven Jakobsson,2,* Thord Fransson3
1aDivision of Environmental and Evolutionary Biology, Graham Kerr Building, University of Glasgow, Gl 2bDepartment of Zoology, Stockholm University, SE-106 91 Stockholm, Sweden
3cSwedish Museum of Natural History, Bird Ringing Centre, Box 50007, SE-104 05 Stockholm, Sweden
*Address correspondence to this author at Tovetorp Zoological Research Station, Stockholm University, SE-640 50 Björnlunda, Sweden. firstname.lastname@example.org
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