Designed to bring hummingbirds right to a window for close observation, this feeder mounts quickly on glass with two suction cups and remains secure. It's made of tempered glass to resist scratching, has a capacity of 14 ounces, and slides on and off the mounting bracket for simple, easy refilling. (Nectar not included.) There are two plastic flower-blossom feeding stations with bee guards and perches. The feeder weighs 1-1/2 pounds, sticks out 3-1/4 inches from a window, and is 8-1/2 inches high.