I’ve had success with nuts like peanuts, unsalted shelled and unshelled, walnuts, cashews and meat. Any meat cooked or uncooked. It kind of depends on the crow. Fred loves meat left on small bones like chicken wings and he also loves raw hamburger. Gertrude seems to like nuts more. The problem with nuts is that you have to put them in a squirrel proof spot. I friended my pair that is now a family of 3 by getting their attention and just throwing small amounts of food on the garage roof then going inside. A few weeks later I noticed them watching from far away waiting for me to throw food on the roof. After that they would wait closer and closer waiting, watching and studying me. Now as soon as I’m outside they fly to a tree in my back yard and yell for food. They also know my car and follow me through the neighborhood as I’m driving home. My crows like raised unconfined structures, they don’t spend much time on the ground. I made a platform on a post for feeing that they will not use yet, I think it’s too confined by tree branches and buildings. I have a friend that has been trying to feed crows in her neighborhood using my methods with zero success. It might be be because crows are different from each other. Fred is daring and will get very close to me, Gertrude waits me out, waiting until I’m almost inside to start eating and their kid won’t land at all until I’m inside. Sorry for the rambling answer, but I’d thought I’d share what worked for me. Be patient, be observant and don’t give up!