This bird seed feeder is great for the canary cockatiel parrot etc. After the water from the slit has been used, the water from the pot will automatically flow, until the birds finish filling the whole thing, since the smallest outlet, so that the water does not risk d be contaminated. The cage bird feeder greatly reduces the busy work of the owner, and solves the problem of frequently changing water. You can add water for several days without changing the water. The pet bird feeder is easy and convenient to use. Bird water feeders are made of high quality materials, solid construction. Descriptions: Features: 100% new and in good condition. Color: As pictures show Material: plastic Capacity : 140ml Dimension (approximately): 12 * 1.3cm Note: The actual color of the item may be slightly different from the pictures shown on website due to many factors such as your monitor’s brightness and light brightness.