For Chicks 0-18 Weeks. A nutritious chicken starter feed, wholesome complete feed for young laying chickens, ducks and geese from hatch to laying age (18-20 weeks). This complete feed is certified organic by the USDA and is made with non-GMO ingredients. Purina® Organic Starter-Grower feed will provide your birds with the proper levels of energy, protein (18%), vitamins and minerals that are perfect for a strong start and early hen development. Available in crumble form.