flying bird with cigarette butts A Swedish company has been training crows to pick up in an effort to reduce the cost of cleaning litter off the streets in Södertälje, near Stockholm., Corvid Cleaning has developed a City birds are using cigarette

City birds are using cigarette butts for pest control. House sparrows and finches line their nests with smoked filters. The nicotine left behind repels parasites like mites and lice. It's a Trading Bird Food For Cigarette Butts Hackaday Bird in Florida spotted feeding baby chick cigarette butt: 'Absolutely disheartening' 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 Photo of seabirds sharing a cigarette butt sparks anger over ocean garbage National Some birds put cigarette butts in their nests to keep pests away. I wrote about self medicating animals for NatGeo last year and this is a fun one Scientists in Mexico

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