They will be plenty warm, they snuggle up to the others. I switch feed this time of year and mix Flockraiser (20% protein) with Game Bird Starter (30% protein). The added protein really helps. Plus, they get any meat scraps (not chicken though) and leftover milk.
For those of you new to molting, here is a thread I started to help:
https://www.backyardchickens.com/t/580915/for-the-new-folks-that-havent-experienced-a-molt-yet/0_50
For those of you new to molting, here is a thread I started to help:
https://www.backyardchickens.com/t/580915/for-the-new-folks-that-havent-experienced-a-molt-yet/0_50