I have 3 new , just a few days old, pekins. The feed store guy sold me Nutrena Medicated Chick feed for the ducks, says they feed all the chicks and the ducklings this; however everything I read says medicated chick feed not good for ducklings. Whats the safest thing to do. I have decided at this time to just give them the adult duck mash, over 20% protien for now until I know its safe. anyone have ideas or know about this for sure?