Ducks are highly cold-hardy birds and more resilient than chickens or other poultry species, boasting layers of fat to keep warm while their feathers provide insulation from both water and air temperatures. Plus, their feet can be tucked close against their body for additional warmth.
Ducks, like other animals, can become very cold during winter. To reduce their chances of hypothermia in such conditions, it is essential that a warm shelter be provided as part of an animal welfare strategy.
An ideal duck house would feature large barn or shed walls that cover at least two square feet per duck and include doors that close securely as well as roofs that protect.
Heated lamps (not space heaters as these present a serious fire risk) may be used to provide heat in the duck house. Just make sure it remains out of reach from any ducks as their feet could easily come into contact with it and cause serious harm.
A thick layer of straw on the floor of your duck house can help insulate it and provide warmth for overnight resting of your ducks. For extra insulation in particularly cold climates, additional bales of straw could be placed along inner walls for added 'insulation'.
Ducks require fresh, clean water to remain healthy. Their outdoor pond or pool may become frozen in winter months, making accessing it harder. A kiddy pool or tub with sufficient room is an excellent solution to ensure their ducks can take a refreshing swim during warmer days - this also serves to wash their feathers regularly ensuring healthy birds.