The Rouen is a heavyweight breed of domesticated duck. Rouens are raised primarily for meat, exhibition, or as general purpose ducks. Since they are not prolific egg layers, Rouen ducks are most commonly bred for their meat. The breed originated in France sometime before the 19th century.
Description The plumage coloring of both the Rouen drake and the Rouen duck are nearly identical to that of the Mallard drake and Mallard duck. The Rouen color pattern is referred to as gray. Males have dark yellow bills, green heads, white collars, black tail coverts and dark, ashy brown tail feathers, a dark gray upper back and light gray lower body, a deep claret breast, and bright orange legs and feet. The female Rouen hens are a consistent shade of mahogany brown, with a brown crown and tan eye-stripes extending from bill to the back of the eyes, and a brown bill. Another feature of the female color pattern is the distinct, detailed penciling found on feathers of the head, neck, body, most of the wing and tail. Rouen females can be much darker brown than Mallard females. Both sexes also have blue speculum feathers. However, Rouen speculum feathers are brighter in color and larger in size than that of the Mallard.
Adult Rouen ducks are typically significantly larger than Mallard ducks; their bodies tend to be longer and heavier than the Mallard. In North America, two distinct types are bred: the common, or production-bred, variety that is larger than a Mallard but has a typical duck conformation, and the much larger and squarer standard-bred variety. The production variety normally weighs 6–8 lbs. (2.7–3.6 kg) while the standard-bred weighs 9–12 lbs. (4.1–5.4 kg). The production variety have a more upright carriage and slimmer body. The standard variety have a more horizontal carriage and a large, blocky body with the keel being deep and level. The Rouen duckling is nearly identical to the Mallard duckling in terms of plumage coloring. Rouen ducklings can be distinguished from wild mallard ducklings by the presence of a second stripe which runs across their face, just under their eye, whereas mallard ducklings have only one stripe which runs across their eye. These birds are of a docile and lethargic nature. Their larger bodies tend to inhibit the Rouen duck from sitting on a nest. Exhibition-typed Rouen ducks have been known to crush their eggs if allowed to set due to their massive frames. They mature slower than most other domestic duck breeds (6-8 months). They are often compared to the Pekin or Aylesbury breeds in both egg production and size. The Rouen is sometimes considered superior to these breeds, because they can be easily fattened, making them an excellent meat bird with delicate flesh.
History The breed was first raised in France, but it was not until it reached England in the 19th century that it was refined into the breed recognized as the Rouen today. The French version resembled a larger than average Mallard, but by selective breeding, the British developed the exhibition-type Rouen. The final product was a bird with a deep, long keel, boat-shaped profile, enormous appearance, and refined markings, especially the penciling on the female. It was used chiefly as a roasting bird; though it produced 35 to 125 eggs a year, there were other breeds which were more reliable egg-layers with higher production. The eggs are typically white but can also be a blue-green color with thicker than normal shells. They average a weight of 3.5 oz. The French considered this domestic duck to represent the idea of "the Perfect Utility Duck." In 1861, Mrs. Beeton said of it:
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