I am in MD and it has be quite cold here for a couple of weeks. I have a chicken that had surgery and is being kept inside until her feathers grow back in. https://www.backyardchickens.com/forum/viewtopic.php?id=421989 I brought my 2-year-old production red, Virginia, to keep her company in the 4 x 4' pen. A day and a half later, I have red feathers floating all over the house. Virginia did not molt last winter and did not molt with the rest of them in October and November. Now she looks ragged and sad. A week ago, my < 1-year-old Sumatra and mottled duccle mix, Ms. Fancy Pants, also molted. This is her first winter. She is in the house as well since it is in the 20's and it is not supposed to get out of the 30's for the next week and she has a few naked spots. I have only been doing this chicken thing for about 4 years. I have not had anyone molt this late in the winter (the latest was late November). So, I have questions. Should I be concerned that I have chickens molting in the middle of winter? Does this happen because of something they are not getting in their diet? Were they "thrown off" by the new hen house with more windows?