flying bird with cigarette butts Why Some Birds Seem to Be Developing a Habit Some birds put cigarette butts

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 Birds Are Getting Hooked on Cigarettes A Swedish company has been training crows to pick up cigarette butts in an effort to reduce the cost of cleaning litter off the streets in Sdertlje, near Stockholm., Corvid Cleaning has developed a Cigarette Butts Think Blue Connecticut River 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 Sparrows use cigarette butts to ward off insects! Ahmedabad News The Times of India

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