Insulate the coop walls and roof
Seal drafts, but keep ventilation near the roof
Use deep, dry bedding such as straw or pine shavings
Add extra bedding regularly to keep it dry
Keep the coop floor off the ground if possible
Use a windbreak around the coop
Close pop doors at night
Make sure roosts are wide enough for chickens to cover their feet
Avoid metal roosts that get too cold
Provide fresh, unfrozen water
Use heated waterers if needed
Increase feed slightly to help chickens generate body heat
Feed a balanced winter diet with enough protein and energy
Keep the coop dry to prevent chilling
Remove wet bedding promptly
Check for frostbite on combs, wattles, and feet
Apply a thin layer of petroleum jelly to combs and wattles if needed
Avoid overcrowding the coop
Let chickens out only when conditions are safe
Use a safe heat source only if absolutely necessary
Keep heat lamps away from bedding and flammable materials
Monitor coop temperature and chicken behavior regularly