Winter flock notes.
Ducks are mostly cold-tolerant by default - far hardier than chickens - but breed matters. The twelve breeds below thrive at sub-zero temperatures with basic shelter. Three breeds we’d avoid for cold-climate flocks. And the housing, water, and feed setup that keeps any duck through a hard winter.
Why ducks handle cold well
A duck’s feather coat is one of the best insulators in the bird world - dense underdown trapping warm air against the body, an oily waterproof outer layer shedding rain and snow. A duck stands comfortably on ice using a counter-current heat exchanger in its legs. Most ducks would rather be at minus ten than at plus thirty.
What kills ducks in winter isn’t cold. It’s wet, draught, or frozen water access.
The 12 cold-hardy duck breeds
Heavy / dual-purpose breeds (best cold tolerance):
- Pekin - white, large, the supermarket duck. Fat reserve, dense down, very hardy.
- Cayuga - black with green iridescence. Originated in upstate New York, built for winter.
- Rouen - mallard-coloured but larger and heavier. Excellent cold tolerance.
- Aylesbury - white English heritage duck. Hardy and slow-growing.
- Saxony - German breed, buff and grey, robust.
Mid-sized layers (good cold tolerance):
- Welsh Harlequin - silver-and-cream Welsh breed. Excellent layer, hardy.
- Silver Appleyard - English heritage breed, similar pattern to a Rouen but lighter.
- Buff Orpington (duck) - golden buff colour, sturdy English breed.
Light layers (good if sheltered):
- Khaki Campbell - tan, the prolific layer. Hardy enough for most winters with a basic shelter.
- Magpie - black-and-white English breed.
- Anconas - rare but lovely, broken-pattern colours.
Wild-type / heritage:
- Muscovy - not a “true” duck genetically but kept as one. Very hardy if kept dry; tropical origins but adapts well.
The three to avoid in cold climates
- Indian Runner - upright, slim, low body fat. Originated in Southeast Asia. Will survive a mild winter but really struggles in deep cold.
- Call ducks - tiny, ornamental, much less body mass. Need heated shelter.
- Mandarin / Wood Duck (as decorative kept birds) - not impossible but require dense cover and shelter; mostly raised in milder climates.
Housing setup for winter
The single most important thing is dry and draught-free - not warm. A duck house at minus ten with no wind is fine. A duck house at plus five with a draught will kill birds.
Minimum specifications:
- A solid roof with adequate ventilation high up - not low down where wind hits the birds.
- At least 4-6 square feet of floor per duck.
- Deep, dry bedding (straw, wood shavings, pine pellets) refreshed weekly.
- An entry that can be closed at night against predators.
- No supplemental heat unless temperatures regularly drop below minus 20°C - ducks acclimate to cold gradually, and heated coops cause condensation problems.
Cedar Duck House
The cedar nest box that survives winter.
A solid cedar duck house, dimensions suited to small-flock breeds (Pekin, Khaki Campbell, etc.). Cedar resists rot and is naturally pest-deterrent. Hinged roof opens for cleaning between seasons.
- Solid cedar construction, untreated
- Sized for one nesting hen or as a winter shelter for two
- Mountable on a pole or sittable on the ground
Stovall · 5H Cedar
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Water access matters more than people think
The fastest way to kill a duck in winter is to remove water access. Ducks need open water to dip their nostrils and clean their bills - they will starve and dehydrate without it within 24 hours.
Solutions in freezing climates:
- Heated waterer (rated for poultry, not pets).
- Daily bucket refresh if no electricity.
- A small unfrozen patch of the pond, maintained with a stock-tank de-icer or aerator.
Winter feed
Increase calorie intake by 25-30% through winter. The standard supplement is cracked corn in the late afternoon - the digestion generates body heat overnight. Don’t replace the layer ration, just add to it.
The bottom line
A flock of Pekins or Welsh Harlequins on cracked corn with a dry cedar shelter and unfrozen water will sail through a Wisconsin winter. The breed matters less than the housing and water setup.
For more on duck-friendly habitat, see our notes on planting a duck-friendly pond and protecting them from predators.
