Experts wearing protective suits are seen at a duck farm in Nafferton, northern England November 17, 2014. Bird flu found on a duck farm in northern England might be linked to a highly contagious strain of the disease found this weekend at a poultry farm in the central Netherlands, as well as a case early this month in Germany. In the British case, the virus was discovered at a duck farm in North Yorkshire. REUTERS/Phil Noble (REUTERS - Tags: ANIMALS DISASTER ENVIRONMENT TPX IMAGES OF THE DAY)