2 of my pullets love cat food. I have cats that I feed in the barn and I have 2 chickens that I have to shoo away from the cat food every morning. Are they telling me something? They have layer pellets in the coop and free range all day. I give them a little scratch at night before they go into the coop. They get occasional treats but mostly pellets and free range. Should I be concerned about them eating cat food?