Selecting the right feeder and waterer for Rouen ducks requires understanding how fundamentally different their eating and drinking habits are from chickens and other poultry. Ducks eat by scooping food into their bills and washing it down with water, alternating rapidly between the feeder and waterer during every meal. This means the two stations must be placed close together, and both must be designed to handle the mess that comes with a duck's dabbling feeding style.
Trough-style feeders work better for Rouens than tube or hanging feeders designed for chickens. A long, low trough allows multiple ducks to eat side by side without jostling and accommodates the side-to-side scooping motion of a duck's bill. The trough should be heavy or anchored enough that a ten-pound Rouen cannot tip it over, and the lip should be low enough for comfortable access but high enough to reduce feed scatter. A trough with an inward-rolled edge helps contain spillage.
Waterers for ducks must allow full bill submersion, which rules out most nipple-style and cup-style waterers designed for chickens. Ducks need to dunk their entire bill and ideally their whole head to keep their nares clear and their eyes clean. A bucket-style or open-dish waterer at least four to five inches deep meets this requirement. The tradeoff is that open waterers get dirty rapidly, so choosing a design that is easy to dump, scrub, and refill quickly is important for maintaining daily sanitation.
Automatic waterers connected to a garden hose or plumbing line are a significant quality-of-life upgrade for keepers with more than a few Rouens. Float-valve designs that refill to a set level as ducks drink eliminate the need for multiple daily refills during warm weather. The waterer should be set on a wire grate or drainage platform so the inevitable splashing does not turn the surrounding area into a swamp.