Crows are intelligent birds and learn quickly – even from each other. In Sweden, they are used to collect cigarette butts and bring them to a machine that automatically rewards them with peanuts.

slothrop@lemmy.ca · 8 days ago

Crows are intelligent birds and learn quickly – even from each other. In Sweden, they are used to collect cigarette butts and bring them to a machine that automatically rewards them with peanuts.

Demdaru@lemmy.world · 8 days ago

But crow has no “mouth” - it has a beak. Not only is it drier than human mouth so saliva doesn’t act to extract that shit, but it’s also extended so the filter won’t touch anything able to leech into.