Originally Posted by Hholly
I have the heat pad set on 5 right now, since there are so many chicks in there. I was afraid some would get trapped at the back and overheat. I'll be going out later today to find something bigger to put them in.
With that many chicks @aart is absolutely right - you may want to leave the back of the cave uncovered so that chicks at the back who want to get away from the heat for a bit aren't blocked by chicks in the front.
And yep, 25 chicks can use the large heating pad, @Paganrose. For the first few days, they want to be under it, but as soon as they realize that they can stay warm on top as well as at the sides, they spend less time underneath. And as they get bigger, they also spend less and less time underneath, so they aren't all trying to crowd under there at night except when they go to bed for the night. Even then, as early as 1 week, and living outside in the brooder in the run, some slept all night long on top and did just fine.