I have two goslings and two ducklings that I am raising together. I was told to feed them Mana Pro Organic Chick Started Crumbles, which I am feeding to them. I have also read contradictory opinions about letting them eat grains and supplementing greens into their diet. Some people say chick crumbles have too much protein and could cause angel wings, some say it doesn't matter. I'm so confused and want to do the right thing for these little guys, help! They are both about 2 weeks old, I'm guessing. Thank you.