This feeder features built-in hummingbird perches to encourage longer feeding times and increase hummingbird viewing. A clear glass nectar reservoir allows you to easily see if nectar needs to be refilled or replaced and all feeder parts are removable for a complete cleaning, extending the life of your feeder and keeping your hummingbirds healthy! A built-in ant moat cap can be filled with water to thwart these frequent feeder pests easily.