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 Birds use cigarette butts for

Birds use cigarette butts for chemical warfare against ticks New Scientist The Great Nest Defence: Why Urban Birds Are Building Homes With Cigarette Butts (And It's Working!) Times Now 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. City birds use cigarette butts to smoke out parasites Nature

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