why do city birds bring cigarette butts to their nests Marlboro palace: how feather | The Independent 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 Urban birds use cigarette butts in their nests: the significance of this scientific finding in Mexico City Noticias Ambientales Why is a bird picking up cigarette butts?, Not addiction. Survival., Some city birds use cigarette filters in their nests because nicotine kills parasites., This behavior is called Urban blue tits use discarded cigarette butts to protect their nests, study suggests City birds use cigarette buds in their nests as pesticides?, Sources:, 1) Urban blue tit nests and cigarette butts: accidental litter or adaptive behaviour? (Animal Behavior), 2) Incorporation of Birds found a healthy use for cigarettes New York Post

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