I am going to reuse my little giant waterer from my ducks coop for my chicks in about a week...they will be 4 weeks old then... I am concerned they may be able to fit in the waterer and don't want that to happen...dirty...could get chilled ... I see most everyone uses nipple waterers on gravity or auto watterer systems. Does anybody like the little giant waterers over other types? Any reason to avoid them with chicks?