Rouen duck breast. 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. Another feature of the female color pattern is the distinct, detailed penciling found on feathers of the head, neck, body, 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. The
Maritime, Fluvial and Harbour Museum of Rouen whale (on loan from the Natural History Museum of Rouen) is exhibited in the centre of the museum. It is a fin whale which was 7 years old when it died after grounding on a beach. A 38-metre barge, the "Pompon Rouge", is exhibited in the courtyard of the museum. Its hold has been transformed into an exhibition room about river navigation, including a model of a lock. In addition, there are regular temporary exhibitions on a variety of topics, such as the Rouen transporter bridge or the vikings. The museum is located in a former port building, Building 13,