We have 11 Chicks in the brooder right now along with 2 ducklings. All are about the same age. (Less than a Week) They get along great. They splash together, cuddle at night and all. But I was told it's bad to raise them together. And that it's a definite no to let them share a space in the coop. Is there a specific reason for that? I can't find anything from a google or BYC search.