My chicken is acting strange. Two nights ago, she didn't go to the coop at night with the rest of the chickens. We thought a predator had gotten her, but then we saw her in the morning, hiding out under the snowblower. She spent yesterday hiding under my van. I'm not sure that she's eating or drinking. She does appear to be losing some feathers in her wing area, so maybe moulting. Could she be egg bound? Or have a cold?