Feed MannaPro Duck Starter / Grower Crumbles to young, growing ducks from 0-4 weeks of age. It is generally recommended to give birds free access to feed, allowing them to consume all they want. This product can also be limit-fed to achieve the desired rate of growth and body condition. Provide fresh, clean water at all times. | MannaPro Duck Starter Grower Feed | Size 8 lbs