I know it's going to be hard to get an answer to this question, since most folks don't raise CXs past 8 or 9 weeks. Something is going on with my CX cockerel Ollie's comb that I'm curious about. Ollie's comb is extra large and falls across his face at the front. He's pretty dang healthy and active for a 14 lb., sixteen, almost seventeen week old cockerel. Since the weather turned cooler last week I've noticed that at times the tips and back of Ollie's comb turns a dusky gray color; usually in the cool mornings and later in the evening. During the warmth of midday it's fine, red and glossy. My theory is that he's so large that his heart cannot supply enough blood to the comb and keep the rest of his body warm too. Does this sound reasonable? Ollie is living out his life here, however long or short that may be, along with the CX pullets.