My chickens really enjoy treats and run to greet me everytime I leave the house in hopes that I am bringing them something good. How often should a treat be given? My chickens always have feed available in their coop and they free range on grass, bugs and sometimes little frogs. I sometimes give them treats 2 or 3 times a day and am wondering if I am adversely affecting their nutrition. They especially love shredded cheese. Is this OK to give them? What do your chickens enjoy the most?