It just seems to happen sometimes. I had a beautiful, apparently healthy Brahma hen on her second lot of eggs, then one morning there she was, dead.I haven't posted here before but had a question. We had 15 light brahma's, most are from hatcheries some are about 9 mo and some are about 16 weeks. We also have or had two a hen and a rooster that we bought from a women that shows them, when we bought them we didn't really ask how old they were bought she said we shouldn't breed them because the were siblings. Well last night the rooster died and I was wondering if it could have been from the cold or if he maybe as just older then we thought. The only inclinations I have to his age that might help you all is he never really tried to mate the other girls and both he and the hen sleep on the floor of the coop. The temp last night was about 2 degrees f and probably -20 with wind chill, but he was the only one that died. I figured that the young chicks would have died from the cold first. I put a heat lamp in tonight( its about 9 degrees right now) but I am second guessing it I was hoping to keep them naturally and have read many people saying that they have chicks that do fine in -30 or even lower temps without heat.