We have some hawks here as well, but we only like seeing them from a distance. If they get too close, we tend to walk outside and shoo them away... SHOO them,
NOT shoot them. 
We don't free range the chickens any longer but the Guineas are free range in order to do their jobs. (Ticks, grubs, other insects, and most importantly, the Copperheads! Unfortunately, the larger hawks, owls, and eagles have been known to kill a few Guineas here and there over the years we have been here, along with the chickens. Especially the Golden Eagles. Here one second and BOOM, gone, just a dusting of feathers and a bunch of excited friends and relatives running around.
The chickens are cooped up, (ever wonder where that common phrase came from?) not because of the birds of prey, but mainly the coyotes and feral dogs. They took more than the birds ever thought of.

We do have a HUGE owl that sits on the fence outside the COOP hoping for the Guineas to stay out at night. Those that do usually try and find a way back in with their flock mates at some point. They only get to make that mistake once.