Migratory birds' stress cause faster ageing, premature death
Migration lets birds take advantage of abundant food resources at high latitudes during the breeding season while escaping the region's harsh winters.
Aug 05, 2016, 15:35 PM IST
Migration lets birds take advantage of abundant food resources at high latitudes during the breeding season while escaping the region's harsh winters.
Aug 05, 2016, 15:35 PM IST