I have 10 hens, no rooster. 5 buff Orpingtons, 3 Barred Rocks and 2 Rhode Island Reds. It's getting frosty and cold at night so 3 night's ago I decided to go out and close the little door. On my way out I heard a huge commotion and when I got to the coop 3 hens were huddled outside with frost all over them. When I put them in the coop 2 of the Buffs were guarding the door and wouldn't let me put the girls in. I just shoved them aside and pushed the girls in and shut the door. I waited about 5 minutes and the commotion stopped so I left. This has been going on for 3 night's that I know of (3 night's ago is when it started to freeze and I started closing the door.) Maybe longer. I need suggestions for how to combat this issue. I am leaving for 17 days after Christmas and my adu,t daughter will be looking after hens, but she is a little afraid of the hens so I am worried some hens will end up out in the cold. Temps will be in the low teens and maybe single digits while I'm gone. Will hens survive out in low temps or is there a way to fix the problem? Or will the issues eventually resolve Itself?