I recently got a group of NH reds. They are in their third week with me, not sure how old they were at purchase. I am assuming they are 4 to 5 weeks old, starting to feather. Yesterday we found one laying with its head back and legs out in the star gazing position. Today another however it refused to eat or drink and died. We now have a third that is weak and beginning to exhibit the same symptoms. The two I have now are apart from the others and I am giving them water with b complex vit dissolved in it and feed, they are eating and drinking. I also got the other chicks that came with the sick ones and separated them from my others. So far it is only three chicks with this problem. And it seems to only be the NH reds. My older chickens, kept in another coop, are just fine as are my Turken chicks that were in the same pen until yesterday. Is there anything else I can do? Should I be adding vit b to their water from now on? Any advice would be great.