Could climate change have brought Delhi's winter birds early?

Migratory birds, which should have come to northern India by November, have appeared in September and October itself
Something is amiss on the landmass of Eurasia. Birds that usually come to winter in Northern India in November, have appeared in autumn itself like these Eurasian Coots in the Sultanpur Bird Sanctuary in Haryana. Photo by Vikas Choudhary
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