Have been wondering about this for the past few weeks. First time around, I raised four hatchery chicks bought at the feed store in a cardboard box brooder. Two of the four had Pasty Butt. Thanks to BYC I knew how to manage it and they all got through it. Recently got five chicks from MPC which I slipped under my broody BO the day after they arrived. All have thrived and flourished. Do broody-raised chicks just not get Pasty Butt or does the mama hen somehow know how to manage it? Is it temperature-related? Now that I've seen these little ones marching around in much cooler temperatures than my cardboard-brooder-raised ones ever experienced, it makes me wonder if the 95 degree guideline is too warm?