Automatic Birdbath:The faucet design requires the installation of 2 AA batteries (not included).Pour water into the bath, turn on the faucet switch to get water circulating.Automatic water flow helps birds bathe. Make bird bathing easier:With the bath, you can make it easier for the birds to bathe, and the bath is good for the health of the birds.This not only helps remove feathers and parasites, but also moisturizes the skin and helps birds dissipate heat. AND ODOR FREE:The automatic bird bath is odorless, light and strong, which can be combined with toys and makes the bird more fun when bathing. Correct size:The automatic bird bath measures about 34.7 x 24 x 8.2cm / 13.66 x 9.45 x 3.23inch, easy to install and easy to clean. Wide application:The bird bath is suitable for bathing various birds and pets, and can be used as a children’s toy.