I have about 1.5 cups of onion, carrot, and garlic cloves I have from my bone stock I've been cooking since yesterday. There is no salt added yet, just venison shank and hindquarter bones and the veggies. I'm still a little fuzzy on the definition of 'leftovers' for chickens. The crock pot is for scale. This would be among 15 chickens. I would say six ducks also, but I can just about guarantee the chooks aren't going to share. They never do! Thank you for any input.