Crows are a hawks natural enemies. Put a few Ayem Cemeni in your yard and that should keep the hawks at bay.I don't think so -- he's killed one of my little leghorns, and my roo fought him (and won) about a month ago -- it's just a matter of time before he kills again. They've been in their covered run 24/07, until recently, when I brought my roo back out after mending -- and even with me out there, here he is. He is relentless.