This morning our four year old muscovy was acting a little Lethargic, more than usual but still eating and drinking and moving around. Now he is barely moving, huddled under the heat lamp in our coop, refusing to eat and drink even if it is held in front of him. It is about -7 outside so we don't think it is a serious case of frostbite that is causing this....please answer soon! Don't know how long he has left......but would rather treat this natural!!!!