Automatic Bird Bath: The faucet is designed to require the installation of 2 AA batteries (not included). Pour some water into the bathtub, turn on the faucet switch, and get circulating water. Automatic water flow helps birds bathe. Making bird bathing easy: With a bathtub, you can make bird bathing easy, and bathing is healthy for your birds. Not only does this help remove feathers and parasites, it also hydrates the skin and helps the bird dissipate heat. Odorless - The automatic bird bath is odorless, light and sturdy, and can be combined with toys to make bathing more fun for birds. Correct Size: The automatic bird tub measures approximately 34.7 x 24 x 8.2 cm / 13.66 x 9.45 x 3.23 inches, easy to install and easy to clean. Wide application: The bird bath is suitable for bathing different birds and pets, and can be used as a children's toy. Includes: Birdie Pool x 1