Migratory birds read invisible maps

On World Migratory Bird Day (May 9), a case study of the Common pochard, exploring possible reasons why this bird could be ‘warming up to’ birders in the Chennai Metropolitan Area but giving those in Madurai the cold shoulderOn World Migratory Bird Day (May 9), a case study of the Common pochard, exploring possible reasons why this bird could be ‘warming up to’ birders in the Chennai Metropolitan Area but giving those in Madurai the cold shoulder https://www.thehindu.com/news/cities/chennai/migratory-birds-read-invisible-maps/article70960474.ece 2026-05-11T07:38:56.000Z Chennai {}