flying bird with cigarette butts Photos of Tiny in Its Mouth Spark Outrage TIL City birds have learned

TIL City birds have learned to line their nests with cigarette butts in order to ward of parasites, as burnt nicotine works as an insecticide to ward off mites, lice and fleas. In Sweden, Crows Are Learning to Pick and Dispose of Cigarette Butts Properly The Swaddle 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 contain

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