in my area one has to contend with winter and with hawks and eagles fox and coons. best that can be done is to have a herding dog and a movable forage coop that you move once or twice a day.
Hawks, Owls and Coons for me in that order. If the Chickens stay under the Live Oak trees then birds of prey are not a problem, they get out in the open ground different story.
I am in a very odd spot right now. Edge of a small town with all the Hispanic neighbors chickens and even guineas coming over into my yard in some cases hatching chicks in places you would not think about, have my own but I seem to be a “chick magnet”