Little Giant's 5 Gallon Plastic Dome Waterer is best suited for adult birds. Made of strong, heavy-duty plastic, this poultry waterer features a top-fill design that is easy to use. A built in valve in the base controls the water flow that closes when filling, then opens to allow water to fill the base. For best results, set waterer on flat ground before filling. This waterer accommodates up to 40 chickens, also good for ducks, and other poultry. | Little Giant lon Plastic Dome Waterer | Size 5 gal