Ok, any one still here? My chickies have been increasingly unhappy at bedtime. Hanging around outside their cave and yelling. There are 9 of them, they are almost 3 weeks old. I had it turned down to 4, but just boosted it up to 5. They are under the small pad. So, I'm wondering if they are not happy with it b/c it's too cold, or not warm enough, or maybe not enough room for all of them to get comfortable (close enough to the sides for comfort, but far enough away so they are not too warm.) When they're settling for the night, they bump and jostle around underneath, so that the cave sometimes looks like a bucking bronco. Temp tonight is 46, but it will be down close to freezing by morning. I just put the big pad together and will run it out, change it out, if they're still grumbling. Blooie, got input about how many and how long for the littles will be happy under the small pad???