Ducks are semi-aquatic birds whose behavioural needs are fundamentally incompatible with intensive indoor farming systems that deny access to open water.
The welfare gap between ducks kept with and without water access is substantial and well-documented. Ducks without water cannot clean their eyes and nostrils, leading to chronic discharge and infection. Preening with water is essential for feather waterproofing and skin health — without it, plumage becomes matted and birds suffer thermoregulatory problems. Frustration of strong motivational states (the drive to bathe and dabble) causes chronic psychological stress, evidenced by increased fearfulness and abnormal behaviours. The good news is that even modest water provision — open drinkers, troughs, or sprinklers — significantly reduces welfare deficits. Full swimming access provides the greatest benefit but even partial provision makes a meaningful difference.