20 oz. vintage blossom decorative glass hummingbird feeder. featuring charming, vintage flowered patterns. built-in continuous perching ring allows the hummingbirds to perch while feeding, which can increase feeding time and lead to even more hummingbird viewing. flexible feeding ports optimize feeding comfort while also acting as leak free gaskets. the built-in ant moat cap can be filled with water to easily thwart these frequent feeder pests. a transparent 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.