Our cat George scoops the layer crumbles out of the feeder with his paw in order to eat it. The chickens love can cat food. Very little fuss over who gets to eat which food, amazing to watch a 5 pound hen make a 10 pound cat 'fly'.
The rooster pretty much stays away from Charlie for now. My adult hens LOVE cat food and will fight for it! lol! Check out my video and you will see one of the young hens chasing Charlie!