My ducks are 7 and 8 weeks old. I moved them into their duck house and then the weather took a turn; rainy and in the upper 30's - 50's for a few days. The house is enclosed and draft free with good ventilation and lots of straw but tonight it is supposed to get down into the 20's. I am worried about the girls. Most are fully feathered but a couple are lagging behind and do not have all their adult feathers on their back/wings yet. They do pile up together and the house has a 'cubby' area that is compact and full of straw that they like to lay in. Will they be okay or should I bring them inside my house??? Worried new Mom