Unless they're a rapid feathering breed, they don't have full feathers yet and should have a heat lamp. However, 40 degrees with a heat lamp they can use as needed is absolutely fine.
Quote:
Wow I got mine with no heat lamp and they are about a month. They do have feathers though. I did notice though that they are awfully noisy. They do have a nest box that they are cuddling in. Tonite would be there second nite without heat. Maybe I should go put a heat lamp on em?