Every year, between September and October, one can witness movement of birds in large numbers signifying the start of migration. It is the annual dispersal of birds from the northern hemisphere to the Indian subcontinent including Sri Lanka.When daylight shrinks and there is a shortage of food supply at the breeding sites, the birds take the cue and start migrating towards wintering sites in the South. The return journey begins in March or April. | The Hindu

Over 400 species of birds congregate across the Indian subcontinent. They take nine flyways across the world and some unusual routes during this flight. It’s an exciting time as a number of incredibly beautiful birds pass through India, and many stay here for the winter before heading to Africa. So, where you can see them? Recently, the greenish warbler arrived in Bengaluru, after flying thousands of kilometres from the mountains of Central Asia. In Chennai, water birds are among the first to ar