Hummingbirds are truly a sight to be seen. With the Perky-Pet Window-Mounted Glass Hummingbird Feeder, you can bring these beauties right up to your window for close observation from the comfort of your home. This charming feeder mounts quickly on clean, dry glass with its two built-in suction cups and remains secure. As an alternative, you can also hang this hummingbird feeder with a nail to the side of a tree or post. This hummingbird feeder is also extremely easy to use. A convenient slide-action bracket attaches quickly and securely to a window and allows the bottle to be removed effortlessly for filling and cleaning. The Perky-Pet Window-Mounted Glass Hummingbird Feeder features two flower-shaped feeding ports with bird-preferred U-shaped perches and a vibrant red base to attract hummingbirds. The bottle is made of tempered glass to ensure durability, while making it easy to monitor nectar levels at a glance.