The shocking discovery of more than 1,000 dead birds of various species along the shores of India’s biggest inland salt lake has left authorities scratching their heads.

The corpses of more than a dozen species of migratory birds were found littered around Sambhar Lake, in the northern state of Rajasthan, in recent days.

The lake is a favored winter spot of migratory birds from Europe and China and is a recognized wetland of international importance, so the unexplained mass death has sparked serious concern among officials. (RT)