DID YOU WONDER? - Below zero temperatures had the turkeys in our yard standing on one leg. I'd "Googled" it before and knew that by tucking one leg they were reducing their exposed skin by half. A vascular system adaptation called "rete miabile" helps, too. The arteries and veins in their legs are arranged close together, which allows blood to be warmed and cooled quickly as it passes through. Warming the blood going to the heart and cooling the blood going to the feet - which reduces the amount of heat loss.