I live in NH with two welsh harlequin ducks. In the winter, I keep them in a cage with a heat lamp, and the cage is covered by towels. During the day, I put them outside in my backyard. When they're ready to come in, they wait by the door on the back deck. They usually are on the deck by 5:30, but tonight it's 9:00 and they're still hiding under the deck where I can't reach them. If god forbid they don't come in at all, will they survive the night in the cold and in danger of predators? Please help, I'm scared for them 
