My chickens used to have a nice coop, a nice run as well, but I also allowed them free ranging of my back yard. I had a few dogs out there with them that protected them from predators. Never lost one to a predator. Got too many eggs to eat, back in the day. But now its trendy? ugh...
That said, I do love chickens--and roosters particularly.
They are bright and loving and lovable.
I have been thinking of getting some layers and building a predator-safe pen in the back yard.