Well they are the invasive species. They are not discriminating. Mice and rats are a small percentage of all the wildlife they kill. Around here they take rabbits, skinks, frogs and a plethora of birds including endangered species.Seems tooo many peeps here would like to treat stray cats like an enemy.All my cats in my Avatar are feral rescues. They don't bother my chickens. They live outdoors and have a safe garage they can enter for the night. I have them ALL neutered/spayed, and do provide food and water always. They in turn provide my grounds, mouse and rat free environment.
Get your cats indoors where they belong.