Rouen ducks - giant
mallards - originated in France. Harrison Weir (1902) commented that
'they are merely the wild duck enlarged by domestication and high
feeding'. The French know them as Rouen fonce (dark) as opposed to the
Rouen Clair, which are lighter-coloured birds with one different colour
gene.
Good Rouen have come a long way
from the mallard. They are imposing birds reaching 12lbs in weight -
which is heavy for domestic waterfowl. Although they have a massive body, they plod around quite easily as long
as they are kept where they get plenty of exercise on grass, and with a
pond or shallow stream.
Exhibition ducks have
brilliantly coloured plumage in sunlight. They are a rich, warm brown
described as almond or chestnut. Each feather is delicately marked with
a darker line, or double or even triple lines on the larger feathers.
They are much more intricately marked than the wild mallard duck. Blue
Rouen have now been produced in Germany by Mark Hoppe (see photos at the
bottom of the page).

The drakes have the brilliant
green head and white collar of the mallard, but the body feathers are a
bit darker, and should lack any white feathers on the flank as it
approaches the tail.
Once kept as a table bird, the
real Rouen is not suited for this purpose today. They are relatively
slow growers compared with the white commercial ducks which have been
developed for the table. Rouen do take a year and a half to reach their
full size. The ducks are not great egg layers- they cannot compete with
the small, light ducks. The amount they lay depends on the strain. Production
Rouen, which do lay more eggs, are not the same as the massive exhibition
birds.
