Hello! I have three red sex-link hens. I just got home from work (4am) and went to check on them to make sure they were ok since it is the coldest night thus far this year. The dominant hen was sleeping apart from the others and STANDING, with her legs all bare. Her head remained tucked under her wing, as did the other two, so I don't think I woke them. Their roost is a 2x4 on its side so that their feathers will cover their feet when they roost and that is how the other two are roosting. Anyone know why she might be standing while sleeping? And is this dangerous for her legs? Thanks!