so i have a duck and a chicken who are 24 and 26 weeks old. they have been inside their whole life. i built them a pen that is 4 feet wide 4 feet tall and 8 feet long. the back 5 feet or so is covered from the rain and such... i have not built them an actual coop for them to go in and sleep. will this be a problem?? the night temperature gets to about 35 or so degrees. the basement where they are kept is pretty cold and they are down their laying eggs already lol. so my question is will they be able to survive the 35 degree nights? and is it ok that they dont have a house yet?? thanks for any and all help!!