Honestly yours are probably fine during the daytime outside with nothing. The several Littles (I think there's 8, not including the rouen quartet that are about 3 weeks old?) In this group are about the same age, maybe a couple days younger. They've been away from their foster mama's for about a week now. This is them 'puddling' a few minutes ago after terrorizing the little bantam chickens and getting their bathes in. The only one in this group with any real feathers is the 6 week old runner in the middle that's successfully stolen all these babies