Hi everyone, I have a black holland and a pekin duck about two and a half months old now. I switched them to grower feed about a two weeks or so ago and they don't seem to like it. I've mixed it with veggies and scratch, but they will only touch it if they are REALLY hungry, and they will only take a few bites. I am growing them for consumption and need to fatten them up, but they are not participating. Help!!! Make them eat!