Buzzards were a real problem on my shoot. Constantly terrifying the poults and taking them every day. Never found leaving out rabbits made the slightest difference! They would perch on the poles holding the netting and take half a dozen a day. What's more thay didn't stop at poults, they would start taking them at six weeks and keep on till they were full grown. To me they were a worse problem than foxes, at least you could do something about them.
Tawnies too were a pain, but at least they only killed poults at six weeks but even so they killed a very large number in a very short time.