I Have a group of young chicks, approx 5 weeks old and mostly feathered- who have been living in my mud room, in a large horse trough. Weather seems to be warming up now, so I'd like to get them into the barn/coup w the rest (I will have them totally segregated from the laying hens until full grown). The day temps are 65-70 projected going forward and lows at night 40-50. Per all the weather reports, I highly doubt we see freezing temps anymore til this fall. Do you think that is warm enough for them?