India, Feb. 5 -- As many as 91 migratory birdshave been tagged so far

Non-profit Bombay Natural History Society (BNHS) tagged 91 migratory birds with satellite-enabled chip in Bihar's Bhagalpur district to track their movement.

Bird-tagging refers to the attachment of a small, individually numbered metal or plastic tag to the leg or wing of a wild bird to enable individual identification. This helps in keeping track of the movements of the bird and its life history.

The birds were tagged at a ringing centre, first of its kind set up in the state last year.

More birds will be tagged in the coming days, said Dipak Kumar Singh, principal secretary, Environment, Forest and Climate Change Department.

Singh added the primary objective was ...