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
Khaki light khaki (also called khaki tan or just tan). It corresponds to "Khaki" in the X11 color names. This is the web color called "khaki" in HTML/CSS. The color shown at right matches the color designated as "khaki" in the 1930 book "A Dictionary of Color", the standard for color nomenclature before the introduction of computers. At right is displayed the web color dark khaki. It corresponds to "Dark Khaki" in the X11 color names. Khaki Khaki (, Canada and ) is a color, a light shade of brown with a yellowish tinge. Khaki is an equal mix of sage