

Sounds like a hawk. I second the idea of keeping them locked up for a day or two if possible to let the bugger move on to better hunting elsewhere. That's what I would do. In lieu of that, staying in the woods is their best bet for survival, and they seem to know that.
Oh! You know, I remember someone here saying that putting up one of those fake owls helped them deter hawks. I don't know if that would help or not, but I remember them saying nothing messes with owls...