Stable Isotope Analysis Reveals Common Teal (<i>Anas crecca</i>) Molting Sites in Western Siberia: Implications for Avian Influenza Virus Spread oleh Alexey V. Druzyaka, Olga R. Druzyaka, Kirill A. Sharshov, Nikita Kasianov, Nikita Dubovitskiy, Anastasiya A. Derko, Ivan G. Frolov, Jyrki Torniainen, Wen Wang, Mariya A. Minina, Alexander M. Shestopalov