Ducks are waterfowl with profound behavioural needs for water access beyond drinking, yet most commercial duck production systems provide only nipple drinkers — denying behaviours ducks are strongly motivated to perform.
Duck welfare in water-deprived commercial production systems represents one of the most straightforward and severe mismatches between what an animal evolved to need and what intensive farming provides. The absence of open water does not merely prevent swimming — it prevents preening that requires water, nasal and eye hygiene that requires head immersion, and the thermoregulation that waterproof feathers provide. Ducks without water access show feather quality deterioration, increased eye inflammation, and stereotypic bill-dipping into dry troughs. Preference testing using operant conditioning consistently shows that given a choice, ducks choose to spend time in open water over nipple drinkers. This reveals genuine motivational frustration when open water is denied. The welfare solution — troughs, pools, or continuous flow systems — is available but adds to housing costs and litter management challenges. Market and regulatory pressure for duck water access has driven change in the UK and parts of Europe, while much of global duck production remains water-deprived.