We have 5 ducks and I'm just wondering how they will do in the cold? What temperature is dangerous for them? We have them in an enclosure (they were attacked and 2 were killed by a red tail hawk a few months ago). Their enclosure is well set up, we've been thinking of covering a few of the sides with heavy packing blankets. We will also be getting a heated waterer soon. They have a dog igloo in the enclosure that they can go into if they are cold (they often do this at night). Any other ideas? Should I be concerned for them in the cold or the snow (which we havent had yet)?