I’m a new chick owner. I have 6. All seem happy and healthy. But now 5 days later, almost everyone has poopy butt. Not a lot of poop, just a little stuck on the butt fuzz. Is it too hot? They sleep together around the edge of the heat. The brooder is 95 F. They are in the house. I did feed them a little grass and sand. They really liked the sand. I am moving them into a larger brooder today. What do you think.. is it the treats or the heat? Or something else.