So i have 14 Ducklings (ish) in my garage in a large stock tank. They are 6 weeks old, and getting way to big for their stock tank. its the largest stock tank available in our area. My question is, would it be okay if they went outside in the chicken coop (dosent have chickens in it yet... just finished it) with a heat lamp? I would keep the mallards inside, because they are too small to go out. Thanks!