Another attraction is the Blackwater Wildlife Refuge, an 11,000-acre sanctuary about 12 miles to the south, created in 1931 to protect migratory water fowl.
Genetic tests suggest that the virus arrived in China with migratory water fowl from east Asia, jumped into domestic ducks, and then into chickens on at least two occasions.
The crane is a migratory bird.
European migratory bird populations are declining.
The surveillance plan for 2013 delimits three different geographical areas: with virus circulation (AVC): the geographic areas affected by the circulation of WNV in the previous years (since 2008), surveillance zones (SZ): the territories surrounding the AVC with an extension of 20 km, at risk (AR): wetlands characterized by the presence of a significant number of migratory water fowls.
The exchange of virus between migratory and domestic water fowls may have accounted for the spread of H5N1 infection over a vast geographic distance.
The rooster is, of course, a heavy, non-migratory ground feeder otherwise known as the domestic fowl, or indeed cock.
Birds of Birbhum include a mix of hilly and plain-land dwelling species like partridge, pigeon, green pigeon, water fowls, doyel, Indian robin, drongo, hawk, cuckoo, koel, sunbird, Indian roller, parrot, babbler, and some migratory birds.
More than 586 species of resident and migratory birds have been categorised, including the crested serpent eagle, blossom-headed parakeet and the red junglefowl — ancestor of all domestic fowl.
