I have 6 Golden sex-links, and 2 Barred Rocks. The Goldens are about 3-4 weeks old, and the rocks are 4-5 weeks old. They are pretty close in size but the rocks are (naturally) bigger. Anyhow, it seems they will empty a quart jar of feed in a day's time. Is this normal? When I bought them, the guy at the store said the little bag of "starter crumbles" should last long enough to get them big enough to start on adult chicken feed. But it seems like I will have only gotten about a week out of the bag.