One of my new Hampshire red hens stays chilly (I only have two hens red Hampshire) it's been in the low to mid teens lately but my buff Orpington roo and the other hen don't act cold as she does? So what the deal? She is more petite then the other hen... Drafts are blocked and they have pine and straw shavings. Plus they get scratch grain and black oil sunflower seeds before bed and in the morning! Thanks guys!