i ahve read on this site about problems with Ravens taking hens and just leaving the feet! we don't have ravens but rooks which are from the same family (Corvids). The crows are not a problem, but I am a bit worried about the rooks. We spotted 3 this morning checking out our open run for our hens. We put our hens in the inclosed run for their safety. I might net the top of the open run to make it safe. So has anyone else has birds taken by Rooks?