In November, 2019 nearly 10,000 migratory birds were found dead mysteriously in the Sambhar Salt Lake area, Rajasthan.
The clinical signs exhibited by affected birds included dullness, depression, anorexia, flaccid paralysis in legs and wings, and neck touching the ground.
The birds were unable to walk, swim, or take flight.
The investigation so far points to avian botulism.
Avian botulism, a paralytic, frequently fatal disease caused by the ingestion of toxins is considered as a “possible cause” but yet unconfirmed.