Knowing where, when and for how long mallard ducks—natural carriers of avian influenza—stop and rest as they migrate can help predict the probability that they will spread bird flu to backyard poultry ...
Alongside bird watching, fish watching is increasingly popular. Croatian angling tourism could take off in a way few might expect.
Knowing where, when and for how long mallard ducks – natural carriers of avian influenza – stop and rest as they migrate can help predict the probability that they will spread bird flu to backyard ...
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