I have my first call ducks in the incubator and am checking out my local feed stores to see what they have in nonmedicated feed. I have some conflicting info on what I should feed them - one reference says that people start their calls on 15% protein feed with lots of greens so they don't get very big. Should I give them 15% Dumor Grower/Developer or start them on the normal 20% Dumor Chick Starter or do something else entirely? At what ages do you switch them to what percent? Is there a certain brand you prefer? I am looking to stay away from creating the food myself. If you raise calls, I would love to hear your advice and experiences. Thanks!