I don't think you can overfeed but do be aware all mine are the "F" word too. I just put out three 24oz bowls now and refill them maybe twice a day just depends on if they're down or if its bad weather and the chickens don't forage as much.This is just for seven birds though that get to forage an acre all day. Acre is full of fruit so that messes with the feed amounts too. As long as nobody's hungry or so "F" they can't move you're doing good!