2011 Event Health authorities begin slaughtering 17,000 chickens after a carcass infected with H5N1 is found at a poultry market in Hong Kong 2011 Event Japan experiences its fifth outbreak of bird flu, forcing the slaughter of 150,000 chickens 1997 Event Hong Kong begins slaughtering all its chickens to prevent bird flu 1940 Event German occupiers slaughter cattle, pigs and chickens
