why do city birds bring cigarette butts to their nests 🐦🚬 Did you know? Some are using build 😳 Researchers say nicotine helps repel parasites 🐛 — protecting baby birds in the short term. But ⚠️ City birds use cigarette butts

City birds use cigarette butts to smoke out parasites Nature 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 Birds use cigarette butts to line nests, St Andrews University study finds BBC News City birds keep surprising us, and this habit is one of the strangest yet. Some species now tuck used cigarette butts into their nests, and the reason may be brutally practical. According 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

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