I recently figured out that I have not been feeding my flock enough. At this point I can't afford more food but next month we will be getting a better price and therefore more food. I didn't realize that I have not been feeding them enough and they have lost weight. I let them out to forage but they seem to prefer the feed to hunting for themselves. I know that feeding my dogs gravy will fatten them up, will it do the same for my birds? I have chickens, guineas, ducks and now geese. Thanks.