do birds eat cigarettes Most people think this bird is addicted. Reality is darker. It's using cigarette butts to protect its babies. Urban like sparrows are weaving cigarette filters into their nests. Why? Nicotine kills The tweet smell of birds

The tweet smell of birds nests: Scientists find birds feather their homes with the butts of cigarettes World of Birds 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 That cigarette butt you flicked? It's in a bird nest now. , THE BEHAVIOR:, Birds gather soft materials for nests., Cigarette filters look perfect fluffy, light, everywhere., THE POISON:, Filters Bird feeding chick cigarette end captured in picture

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