I have 7 1 1/2-2 week old chicks and 1 week old chick. They never use the heat lamp. I've checked proper temps and everything, even going down to <90 and they won't use it. They all stay huddled together on the cool side. I've adjusted it so many times and I'm not sure what to do. Granted it's a little cramped (brooder too small for the size flock) and I'm going to be building a coop and moving them outside (not yet). Temps are steadily rising (CV California) and are expected to reach the 80's very soon. For right now I just turned off the heat lamp a few minutes ago. House temp is at 75. Outside at 55. No wind or draft, etc. 8 of them are in a large plastic tub. Those ones everyone sends clothes in. I realize now I was an idiot (I forgot that they grow) as it's way too small for that number (it should house at most 3). I was planning on building their coops this Friday, leaving them all in one until they get bigger to be separated. Will they be fine? They were loud for a moment (never slept in dark), but they're all quiet and content right now.