And though it's been mentioned, don't forget the grit. They can starrve to death without it. Chickens have no stomachs, the silly things, and no teeth! They have gizzards, a tough muscle that, when it contains grit, uses that grit to grind their food into digestible bits. Aren't you glad you don't have to eat gravel to survive?
But we, their kind and loving keepers, do have to supply it for them. They can have my share.
