We have two Muscovy's die in the last two days. The first one was clear hypothermia (my first experience with it, but it was pretty obvious), it occurred yesterday morning, which was right after the -10 to -20 degree night with winds blowing at blizzard strength. The first one was still alive, barely, when I discovered him so I brought him inside but was unable to revive him and he died in my arms. So last night and this morning, we made extra sure to visually check each Muscovy and check for alertness and everyone looked fine. Today was not as windy and temps were in the 20's. I got home from work early (3:30) and when I went out to do the chores, noticed one Muscovy not moving as I threw cracked corn around the duck house. Second one was dead, was in rigor and frozen. Both were males and both were juveniles. This is the first winter we have had losses. This has been a worse winter than others with more snow than we have had in quite awhile and more consecutive days of severe cold, so I don't know if that has something to do with it. What if a disease is running rampant? No one looks or acts sick though. We don't provide a heater due to fire hazard and I've heard and read that it reduces their ability to self regulate their body temps and if the heater goes out, they aren't used to the cold anymore. Is anyone here an experienced Muscovy keeper? Is this typical for Muscovy's since they are more of a southern bird? How does everyone (duck or chicken keepers) deal with the cold? Do you insulate or wrap your coops? Any thoughts are very appreciated!