My grandmother used to do the same with squirrels and chipmunks - but only leave the nuts out for the first few times, then she'd bring them back in after waiti

My grandmother used to do the same with squirrels and chipmunks - but only leave the nuts out for the first few times, then she'd bring them back in after waiting for a bit. They immediately figured it out and would come down to get them on future attempts. I imagine the same would work with crows.