<p>Our neighbors who live about a mile away have a similar problem. There is actually some sort of CD they purchased called something like “Crow Be Gone” that has sounds that deter them. You have to have your speakers outside though. Something else they said helped were owl decoys. But you have to move them around every few days or the crows catch on that they are not real. Apparently they are intelligent birds. </p>
<p>Food source is the problem - remove that and they will move on.</p>