I am brand new to this whole chicken thing! 3 weeks ago we took the leap and got 3 Buff Orpingtons. I'm happy to report that they are all healthy and happy. But last Thursday we got 6 Brahmas. We got a new brooder light since the Orpingtons were using our first light and so the first night we had trouble regulating the temp (too hot). Friday morning 2 had pasty butt. Not real bad and we got them cleaned off. Friday were were able to regulate the temp and had the perfect 95 degrees. Last night before bed, all Brahmas were running around, eating and drinking. This morning when I got up, DH said that one chick was not looking good. Laying on her side and lethargic. We tried a little sugar water and nothing. I went down an hour ago and she was completely non-responsive. I brought her upstairs and held her while we frantically searched here for possible solutions. She then opened her eyes and appeared to have a seizure. She had labored breathing for another 15 minutes and then streched out and died. I am so worried that we did something wrong. I've looked through the diseases - she had no coughing, no nasal discharge and no diarrhea. I am also worried about the 5 remaining chicks. Any thoughts?