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.
Nicasius of Rouen Nicasius of Rouen Saint Nicasius of Rouen (; d. perhaps 260), often known as the Apostle of the Vexin, was a 3rd-century saint and martyr in Gaul. He is sometimes considered the first Bishop of Rouen, although probably incorrectly. Nicasius evangelized the Vexin, although he was apparently never in Rouen and despite tradition, was probably never bishop there. He spent a year at Mousseaux and evangelized Rolleboise nearby. He performed several miracles and evangelized numerous places along the Seine (among them Conflans, Andrésy, Triel, Vaux, Meulan, Mantes and La Roche-Guyon) but was martyred with his companions on the banks of