Lakhs of blue tiger butterflies migrate towards the Western Ghats

Lakhs of blue tiger and dark blue tiger butterflies are flying from the Eastern Ghats towards the Western Ghats to escape the North-East monsoon lashing Chennai and nearby districts. Butterfly watchers in Salem, Erode, Tiruppur, Coimbatore, Madurai and Kerala are stepping out to count them, coordinated through a WhatsApp group called Butterfly Migration India.