This bird seed feeder is great for canary cockatiel parrot etc. After the water from the slot has been used up, the water from the pot will automatically flow out, until the birds finish feeding. filling the whole, since the smallest outlet, so that the water is not likely to be contaminated. The caged bird feeder greatly reduces the busy work of the owner, and solves the problem of changing water frequently. You can add water for several days without changing the water. The pet bird feeder is easy and convenient to use. The bird water feeders are made of materials high quality, solid construction. Descriptions: Features: 100% brand new and in good condition. Color: As the pictures show Material: Plastic Capacity： 140ml Dimension (approximately):12*1.3cm Note: The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. Note: The data are all manual measurement , please allow 1-3cm error; due to the difference in light and display, there would be a certain color difference, please refer to the actual object received.