What kind of food do you give a baby duck?

You would give a baby duck 'starter food' this you can find at feed stores and generally the area you purchase your baby ducking from. If you don't have an area like that, you could always go to this website. http://www.mypetchicken.com/catalog/Feed-and-Water-Supplies/Chick-Starter-Feed-5lb-bag-p219.aspx

it has the 5lb bag for baby ducks and its inexpensive. That is just one website, you could compare prices and other websites to find it even cheaper.