An article on migration of birds during winter
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The greenish warblers have arrived in millions, after flying thousands of kilometres from the mountains of Central Asia. The forested areas of the Indian peninsula are now aflutter with high-pitched sounds of this wispy little, olive green bird that goes sti-ti-ti-ti-ti-si... “These birds arrive singing,” says Ganeshwar SV, founder of Salem Ornithological Foundation. “These are territorial songs staking claim to their trees or little segments of forest as they settle down. The songs echo across the foothills, plains, plateaus, and hill ranges now,” he adds.
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. “Like our highways, we have nine flyways in the world that the waterbirds use for migration,” says S Sivakumar, scientist at Bombay Natural History Society (BNHS). “For Asia, it is the Central Asian Flyway that covers 30 countries including India at the tail end with huge landmass and habitat variations, especially the wetlands.”