A Swedish company, Corvid Cleaning, is recruiting crows that will help clean the streets of Södertälje by picking out cigarette butts. Wild crows will be trained and rewarded with food for cleaning ...

Crows are among the most intelligent birds known to humankind. They adapt easily to both city life and rural surroundings.

PORTLAND Ore. (KPTV) - The crow patrol is officially on duty in downtown Portland. “We’re hearing plip plop, plip plop,” Lisa Schroeder said. Schroeder isn’t talking about the rain we’ve been seeing.

A Swedish startup company is training crows to clean up cigarette butts off the streets. Corvid Cleaning uses machines that offer food rewards to the birds whenever they deposit butts or other small ...