Best suited for adult birds. Made of strong, heavy-duty plastic. Large lid removes for easy filling and cleaning. Internal float mechanism automatically controls water flow. For best results, set waterer on flat ground before filling. Accommodates between 80-100 chickens, also good for ducks or other poultry. Holds up to 10 gallons/38 liters of water. | Little Giant 10-Gallon Deluxe Dome Chicken Waterer | Size 10 gal