I've been thinking of trying to "befriend" some crows this spring. They are very smart birds.
I have seen videos where crows can recognize someone who is kind to them (read as, feed them) and will come to you when they see you. The longer you keep doing this, the more they will come to trust you.
From what I saw, it looks like the point will come where they figure out where you live and will start visiting you in anticipation of treats.