do birds eat cigarettes use cigarette butts for chemical warfare against parasites. The nicotine and other chemicals in discarded filters act as a natural pesticide that repels parasitic mites. This is why birds are keeping 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 For at least one species, cigarettes might actually be good for health. The Eurasian blue tit has been seen lacing nests with cigarette butts. It might be acting as a weapon against 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 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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