Rouen

The Rouen is a heavyweight domestic duck developed in France. Its plumage pattern all but matches the wild mallard, yet the bird runs two to three times the size and is far too heavy to fly. A drake in good condition often weighs 3.6 to 4.5 kg (8 to 10 lb), which sets the Rouen among the largest standard duck breeds kept on farms and lifestyle blocks.

Two distinct types share the name. The production or common Rouen is a practical farm duck with a more upright stance, while the exhibition Rouen is a deeper, blockier bird bred to a strict show standard, its level keel nearly brushing the ground. Both carry the mallard colouring and the breed's quiet, easygoing nature.

Rouens mature slowly and move slowly. They forage well, take cold in their stride, and seldom cause trouble in a mixed flock. That combination of size, colour, and a docile temper has kept the breed with hobbyists and exhibitors rather than commercial operations, which lean on faster-growing lines.

Who the Rouen suits

The Rouen is a match for a keeper with space, a water source, and patience for a slow-growing bird. Its weight and gentle manner make it a poor flyer and an unlikely escape artist, which suits open back-garden setups. People drawn to the mallard look without keeping a wild species often land on this breed. It is a poor fit for anyone chasing high egg output or fast meat production, since the Rouen lays modestly and matures slowly.

The breed is named for the city of Rouen in Normandy, northern France, where mallard-coloured farm ducks were raised for the table across generations. Early French stock was a utility bird of moderate size, chosen mainly for meat. Eighteenth-century records describe large mallard-patterned ducks in the region, though no single founding date is documented.

The duck reached England in the early nineteenth century, and British breeders reshaped it a great deal. They selected for greater size, a deeper body, and a low horizontal carriage, turning a working farm duck into a show bird. The heavy exhibition type most people picture today owes far more to this English refinement than to the original French farm stock.

The Rouen entered the American Poultry Association Standard of Perfection in 1874, among the earlier duck breeds recognised in the United States. From there the breed spread through North American exhibition and hobby circles, and later into New Zealand and wider poultry keeping.

Two lines carry on from that split history. The production Rouen stays nearer the lighter French utility duck, while the exhibition Rouen holds to the deep, blocky English ideal. Both keep the mallard colouration that has marked the breed throughout.

The Rouen reads at a glance as a giant mallard. The body is long, broad, and carried low, with a full keel most pronounced in exhibition birds. The head is large and the bill medium in length. For all the bulk, the bird moves with a slow, level gait rather than the upright waddle of lighter breeds.

Plumage and colour

The drake has an iridescent green head, a white neck ring, a claret or deep chestnut breast, and a grey body, with curled black tail feathers and a yellow to greenish bill. The duck is mottled brown throughout, good camouflage when nesting. Both sexes carry a blue speculum bordered with white on each wing. Through summer the drake goes into eclipse moult and takes on a duller, female-like plumage for a time before returning to full colour. Sexing by colour is reliable only on mature birds outside the eclipse period; the bill colour and the curled drake tail feathers serve as useful secondary cues.

The Rouen is among the steadier duck breeds. It is slow-moving and placid, partly by temperament and partly because its weight discourages quick or excitable behaviour. Birds raised with regular handling grow tame and take people well, though they are not lap pets and prefer the company of other ducks.

Within a flock the breed is peaceable. Rouens do not tend to bully smaller birds and usually settle to the lower or middle of a mixed pecking order. Drakes are generally easygoing, but during breeding season any drake can turn more assertive, and a high drake-to-duck ratio can lead to over-mating that stresses the females.

The Rouen is a weak flyer and stays close to home, which keeps fencing simple. It is also fairly quiet next to breeds like the Call duck; the ducks quack while drakes make a softer rasping sound. That calm nature makes the breed forgiving for newer keepers, so long as its size and slow pace are allowed for.

Routine care turns on water, space, and protection from predators. Being heavy and slow, Rouens need ground-level access to everything and get on better with ramps than steps.

Grooming

• Ducks groom themselves; provide bathing water so they can keep feathers clean and oiled
• Check the vent and feet regularly for caked mud or droppings
• Inspect the keel and underside of show birds, which sit low and pick up dirt

Exercise

• Allow daily foraging time on grass or a planted run
• Keep feeders and waterers spread out to encourage walking
• Avoid forcing fast movement; the breed tires quickly under its own weight

Environment

Provide dry, draught-free shelter at ground level with deep bedding. Always supply drinking water deep enough for the duck to submerge its whole bill and rinse its nostrils and eyes. A shallow pool or large tub for bathing keeps plumage in good order. The breed takes cold well but needs shade and extra water in heat, since heavy birds overheat more readily. In warmer parts of New Zealand, summer shade is the main concern.

A complete commercial duck or waterfowl feed should form the base of the diet. Where waterfowl-specific feed is hard to get, a non-medicated poultry feed with added niacin supports the leg and bone development growing ducks need. Free-ranging Rouens top up their intake with grass, insects, and slugs, but forage alone does not meet their needs.

Treats and supplements

Offer treats such as chopped leafy greens, peas, and mealworms in small amounts, kept to roughly a tenth of total intake. Provide insoluble grit so ducks can grind food, and offer crushed oyster shell separately to laying females for shell strength. Because Rouens gain weight easily, watch body condition and cut treats if birds grow heavy, since excess weight strains the legs and reduces fertility.

The Rouen is a robust breed with a typical lifespan of 8 to 12 years under good care. Most health issues trace to the bird's size rather than to genetic disease. Heavy ducks load their legs and feet, so dry footing, clean water, and weight control count for more in this breed than in lighter ducks.

Preventive care

• Keep living areas dry and provide soft, clean ground to prevent foot injuries
• Supply niacin-adequate feed to ducklings during rapid growth
• Monitor weight and limit treats to protect legs and fertility
• Provide year-round access to clean bathing water for feather health
• Check feet and legs regularly, especially in low-set exhibition birds

Rouens live outdoors with a secure house for night roosting and protection. They do not perch or roost off the ground, so housing is a floor-based shelter rather than a coop with bars. Being heavy and a weak flyer, the breed can be held by relatively low fencing, but it must be solid against ground predators such as dogs and mustelids.

Setup checklist

• A dry, draught-free ground-level house with a wide, low entrance or ramp
• Deep bedding changed before it becomes wet or fouled
• A run with grass or planting for foraging
• A bathing area sized so the duck can dip its head and splash
• Predator-proof walls, roof or netting, and a secure night latch
• Shade for hot weather and a windbreak for winter

Rouen eggs hatch in roughly 28 days. Many Rouen ducks, above all the lighter production type, will sit and raise their own young, though heavy exhibition birds are less reliable as broodies and their weight can crack eggs. Incubators give consistent results when a broody is not on hand or when hatching a larger number of eggs. Set only clean, well-formed eggs stored pointed end down at cool room temperature for no more than about a week before setting.

Hatching steps

1. Set clean, fertile eggs and run the incubator at the temperature and humidity above
2. Turn eggs several times a day to stop the embryo sticking to the shell
3. Candle around days 7 and 14 to remove clear (infertile) or dead eggs
4. At day 25, stop turning, raise humidity, and avoid opening the incubator
5. Let ducklings hatch and dry fully before moving them to a warm brooder