Ducks are the second most numerous poultry species globally after chickens, farmed for meat, eggs, and foie gras production. Their welfare needs differ significantly from chickens — particularly their requirement for water for bathing and foraging — and have historically received less scientific and regulatory attention.
Ducks are aquatic birds with powerful behavioural drive for water access beyond drinking. Essential water-mediated behaviours include: bill dabbling and submersion (sensory behaviour — the duck bill contains lamellae for filtering food from water), head dunking (cleaning bill, nostrils, and eyes), bathing (maintaining feather waterproofing and condition), and swimming (natural movement and enrichment). Deprivation of open water for head submersion and bathing causes visible distress and compromises feather condition and eye health.
Intensive duck production systems typically provide only nipple drinkers or open troughs for water access — insufficient for bathing and bill-related behaviours. Research consistently shows ducks in enriched systems with open water use bathing opportunities frequently and show better feather condition, cleaner eyes, and better overall welfare. The discrepancy between minimal water provision (common in commercial systems) and ducks' behavioural needs represents a significant welfare compromise in current production.
Duck housing ranges from fully indoor systems to outdoor access systems. Key welfare differences include: indoor systems with adequate litter provide enrichment opportunity but risk respiratory issues if litter management is poor (ducks are heavy water users, creating wet litter rapidly); outdoor access systems allow natural behaviour expression but require careful management of wet areas; access to bathing water in any system dramatically improves welfare outcomes. Ponds, shower systems, or deep drinkers that allow bill submersion are welfare improvements over nipple drinkers alone.
Duck health challenges include: duck plague (Duck Virus Enteritis — DVE, a herpesvirus causing haemorrhagic disease), duck hepatitis viruses, Riemerella anatipestifer (systemic infection in young ducks), and coccidiosis. Respiratory disease is less common than in chickens but occurs. Duck feather condition is a useful welfare indicator — dirty, wet feathers indicate inadequate water provision and husbandry problems. Foot pad lesions (analogous to those in chickens) occur in ducks on wet, poor quality litter.
Foie gras production involves force-feeding (gavage) ducks (and geese) to produce an enlarged, fatty liver. This practice is prohibited in the UK and many European countries but imported foie gras remains legal. Welfare concerns relate to: the force-feeding process itself (stress, physical discomfort), oesophageal damage, hepatic encephalopathy, and mobility problems from the enlarged liver. Foie gras production represents an extreme welfare trade-off where product quality comes at severe cost to individual animal welfare.
Key welfare improvements for farmed ducks include: provision of open water for bathing and bill submersion (even small containers providing head immersion represent a significant improvement), litter management to prevent excessive wetness, appropriate stocking density, and access to outdoor areas. Higher welfare certifications (RSPCA Assured, organic standards) incorporate water access requirements. Consumer awareness of duck welfare and demand for higher welfare products creates market incentives for improvement.