With their well-oiled feathers and thick coating of down, ducks are amazingly resistant to cold and wet weather. For ducks in general, a windbreak that is bedded on the protected side with dry litter usually provides sufficient protection in areas where temperatures occasionally drop to 0º F. However, for laying ducks, feed conversion and egg yields can be improved if ducks are housed at nighttime whenever temperatures regularly fall more than 5º to 10º F below the freezing level. The duck house can be a simple shed-like structure (approximately three feet high) and does not require furnishings such as raised nests, perches and dropping pits. When ducks are housed only at night, a minimum of three to five square feet of floor space per duck is recommended. If you anticipate keeping your ducks inside continuously during severe weather, providing each bird with eight to 15 square feet helps keep bedding reasonably dry and sanitary. Because ducks roost on the ground at night, they are susceptible to predators. Under most circumstances, ducks should be locked up at nighttime in a yard that is tightly fenced with woven wire or netting at least four feet high. In areas where thieves such as weasels, raccoons and large owls are known to roam, it is much safer to lock ducks in a varmint-proof building or pen at nightfall.
If you would like to make a nesting box for your ducks, the ideal size for most sized ducks is 12 x 18 x 12 inches deep
First Pictures - Head of a male African Goose Second Picture - Male Toulouse Goose