We have a lot of birds of prey around here. Most mornings I see a big one in the top field normally helping me with rabbit control, I have the chickens run with a cover over and the new pens I'm doing with have a cover overhead, I use heavy pond netting and that seems to keep everything safe.
I try to strike a balance between my little holding and wildlife but if the bu**ers step over the line then I do have to act, at the moment it is rats that are the problem but they are coming in from the farm just up the lane and eating me out of house and home as far as poison is concerned. The lane next to the farm has about 10 dead ones on it.