These mega-smart crows are cleaning cigarette butts off city

These mega-smart crows are cleaning cigarette butts off city streets — and saving millions of dollars in the process

Cigarette butts alone make up a whopping 62% of all street litter in Sweden.

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Sweden , France , French , Swedish , , Keep Sweden Tidy Foundation , Corvid Cleaning , New Caledonian Crows , Cigarette Butts ,