Bird flu or avian influenza is threatening Bihar's poultry industry and an SOS has been sent to the central government on tackling the deadly H5N1 virus as the state lacks the resources to do so, a Bihar minister said.

The SOS was sent after the Bhopal-based High Security Animal Disease Laboratory (HSADL) attributed the deaths of a number of crows across the state to the H5N1 virus, Animal Husbandry Minister Giriraj Singh said.