Crows are trained to pick up cigarette butts on city streets to fight litter. The crows receive a little food for every butt they deposit in a machine designed by Corvid Cleaning.
Crows are being recruited to pick up discarded cigarette butts from the streets of a Swedish city Sodertalje, in the south-west, near the capital Stockholm. They has introduced a pilot scheme where the wild birds receive food for every butt they deposit in a machine.
“They are wild birds taking part on a voluntary basis. By teaching the crows to exchange butts for food, they can help clean our streets a,” said Christian Günther-Hanssen, the founder of Corvid Cleaning, the company behind the method.
Mr Gunther-Hanssen has spent months training the crows at a recycling in Stockholm.
“Crows are basically the most intelligent wild animals that we have in Sweden, and probably in Britain, too,” he said. “They will understand the difference between some trash and a rock or a leaf, which they will not be rewarded for, obviously.”
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