I am ordering some pekin duck eggs and possibly going to buy some adult ducks. I have never had ducks. I do have chickens, so I would like to feed them chicken feed if this is possible. Also, considering my local feed store does not sell duck food, I am guessing I have to feed some kind of chicken feed. 1. After doing some research, I read that I feed ducklings chick starter until they're 3 weeks old???? 2. then chick grower until mature (is that 6 weeks old-I read that, but that seems young to be mature)???? 3. what do you feed adult ducks? thanks in advance!