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Caption: Bewick's swans (Cygnus columbianus bewickii) breed in Arctic Russia and return to Western Europe in autumn. Avian influenza virus infections have been linked to the swans' foraging during autumn migration, potentially increasing terrestrial transmission in winter. This image relates to a paper that appeared in the 4 April, 2014, issue of Science, published by AAAS. The paper, by Silke Bauer at Swiss Ornithological Institute in Sempach, Switzerland, and colleagues was titled, "Migratory Animals Couple Biodiversity and Ecosystem Functioning Worldwide."
Credit: [© Bethany Hoye]
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