[dTal]

They're smart enough to find cigarette butts wherever they are, not just the ground. I predict you'd see a lot of crows stealing lit cigarettes and emptying ashtrays etc.

[KGIII]

Crows are really smart. If anyone is interested, here's a PBS Nature doc about crows.

https://m.youtube.com/watch?v=hBJKPwIFzDI

They even transfer knowledge between each other and through generations.