I am new to the raising chickens. I have twelve splecked sussex chicks (three weeks old) and one roo/four hens wyndonates (nine months old) I purchased from a friend. I would like to feed the older chickens greens, etc. and I am unsure of what I can feed them. Can they eat apples, pears, tomatoes, bananas? Is there a list of acceptable fruits and vegatables to feed your chickens?