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Heimo Mikkola
University of Eastern Finland,
Joensuu, Finland
Esko Rajala
Länsirannantie 297Mäyry, Finland
Ülo Väli
Institute of Agricultural and Environmental Sciences
Estonian University of Life SciencesTartu, Estonia
Oskars Keišs
Institute of Biology
University of LatviaRiga, Latvia
Vytautas Jusys
Ventės Ragas Ornithological StationLithuania
Zbigniew Kwieciński
Department of Ecology and Anthropology, Institute of Biology,
University of Szczecin,
Department of Avian Biology and Ecology, Faculty of Biology,
Adam Mickiewicz UniversitySzczecin,Poznań,Poznań
Valery Dombrovski
Laboratory of Molecular Zoology,
National Academy of Sciences of Belarus
Minsk, Belarus
Thorsten Krüger
Oldenburg, Germany
Jan Hušek
National Museum of the Czech RepublicPraha, Czech Republic
Samuel Pačenovský
State Nature Conservancy of SlovakiaBratislava, Slovakia
Yuriy Kuzmenko
Schmalhausen Institute of Zoology, NAS of UkraineKyiv, Ukraine