I had rouble attracting crows as well. However, when I switched the location of where I put the peanuts, my luck changed dramatically. There was some thing about the back of our house that they did not respond to. They like to come to our front porch.
I live in the suburbs of Philadelphia. We have quite a few crows, but also have fish crows. I have been trying to make friends with them for sometime. I am absolutely enamored by crows.
I feed them peanuts every day. However, there is a competition with the Blue Jays. However, the crows are getting more and more accustomed to coming up on our porch.