why do city birds bring cigarette butts to their nests 🚬 is a bird picking up butts?, Not addiction. Survival., Some use cigarette filters in because nicotine kills parasites., This behavior is called Most people think this bird

Most people think this bird is addicted. Reality is darker. It's using cigarette butts to protect its babies. Urban birds like sparrows are weaving cigarette filters into their nests. Why? Nicotine kills The Great Nest Defence: Why Urban Birds Are Building Homes With Cigarette Butts (And It's Working!) Times Now Birds are developing a 'cigarette habit': Scientists reveal the surprising reason The Times of India To protect their nests from parasitic mites, urban birds line their nests with used cigarette butts. The use of nicotine as a pesticide is natural.

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