Coping with cold
Chickens, providing they are fit and healthy, will cope well with the cold. Their feathers provide fantastic insulation and when they fluff up their feathers they create airspace between the feathers as well as the feathers and the skin. Thus your chickens are provided with the extra insulation that they need in the colder months. This is just like us putting an extra jacket, scarf and hat on. Chickens will also lower their body temperature, heart rate and general body functions which will help them adapt to the cold. Relaxing in groups, all huddled together, also helps to keep the flock warm.
Huddled together for warmth INSET: ... and a spot of preening