Ducks (England): Code of Recommendations for the Welfare of Livestock (PB0079)

Housing

Lighting

30. During the hours of daylight the level of indoor lighting, natural or artificial, shall be such that all ducks can be clearly seen. In addition, adequate lighting should be available for satisfactory inspection at any time. (4) (See also paragraph 15).
31. Housed ducks may be frightened by disturbances such as passing car lights and vermin if kept in complete darkness at night. It may therefore be desirable in windowed housed to provide subdued lighting rather than allow total darkness. It is however equally important that birds should be accustomed to the dark. In windowless houses with artificial lighting the birds should be given a period of reduced light intensity every 24 hours. Dimmers or other devices to avoid sudden changes in light intensity should be used.

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