We had a cold night and I kept checking on the brooder temp. It got down to about 77 and I have been trying to keep it around 80 - 85+. So I made it warmer and checked on them twice during the day. Well in the afternoon when I went out, one of the extra yellow chicks was dead. He had a little bit of shavings in his mouth, but I don't think he suffocated. They weren't cold, by then the temp was close to 90. Just 2 hours earlier they were all fine. I think he was the one having orangish, foamy poo because since he has been gone I haven't seen anymore poo like that. The rest seem healthy and have the occasional runny brown poo. I am sad, it wasn't a Dominique but it still makes me sad. My chicks are 12 days old. Does anyone know what might have caused his poo to be orange and foamy? He had it the whole time and this was the only abnormal thing that I noticed. They have only eaten medicated feed, a few bugs and dirt grit.