Rouen duck Rouen duckling is identical to the Mallard duckling in terms of plumage coloring. 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 lb (4.1–5.4 kg). 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.
History of Rouen In 1150, Rouen received its founding charter, which permitted self-government. During the 12th century, Rouen was probably the site of a Jewish yeshiva. At that time, about 6,000 Jews lived in the town, comprising about 20% of the total population. The well-preserved remains of a medieval Jewish building, that could be a yeshiva, were discovered in the 1970s under the Rouen Law Courts. In 1200, a fire destroyed part of Rouen's Romanesque cathedral, leaving just St Romain's tower, the side porches of its front, and part of the nave. New work on the present Gothic cathedral of Rouen began, in