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 History of Rouen Rouen, France, was founded by the Gaulish tribe of Veliocasses, who controlled a large area in the lower Seine valley, which today retains a trace of their name as the Vexin. The Gauls named the settlement "Ratumacos" and the Romans called it "Rotomagus". Roman Rotomagus was the second city of Gallia Lugdunensis, after Lugdunum (Lyon). After the reorganization of the empire by Diocletian, Rouen became the chief city of the divided province of Gallia Lugdunensis II and reached the peak of its Roman development, with an amphitheatre and "thermae", the foundations of which remain today. In the