We got our first chicks a week ago. I know we have an americauna and a rhode island white, not sure about the other two. Brooding them inside in a box with a 75 W bulb, They are doing well and eating the feed like there is no tomorrow. The feed store where we bought them told us they needed to be indoors for about 3 months (It has been down to mid 20s at night past several weeks) I am reading in the forum that many people put them outside at 3-5 weeks. New to this so we want to do what is right.