I bought 10 Muscovies late in the summer, and they folded in nicely with my chickens... UNTIL... last week 2 of them decided to spend the night on top of our wooden clothesline. Now they have decided, and can fly to, that they like the peak of my roof. Obviously these two are rebels, but what kind of weather do I have to worry about? By the way, they join the free ranging flock daily.... They just like to be out late! One thing is a positive... My gutters are spotless!