Ducks are water-adapted birds with strong motivation for water-related behaviour that is denied in most commercial production systems; welfare standards for ducks lag significantly behind those for chickens.
The welfare challenge for commercial ducks is distinctive: they evolved for aquatic environments and retain the motivation and physiological adaptations of their wild relatives, yet commercial housing systems provide at best open-topped drinking water troughs. The inability to fully submerge and bathe means eye irritation and reduced eye health are endemic in commercial duck flocks. Welfare certification for ducks is less developed than for chickens and represents an important gap to address.