The Happy Eight Hummingbird Feeder features a leak-proof design. The low-profile bowl provides an unobstructed view of the hummers. BPA-free material prevents possible health issues. The feeder holds a quart of nectar and features 8 ports with a set of patented Nectar Guard Tips that block bees and flying inserts from contaminating the nectar. Hummers are naturally attracted to the red color on the flowers and filler cover. A circular perch ring provides hummingbirds with a resting place as they feed. The snap-fit cover makes cleaning easy and an easy-lift filler cap allows quick refills when hummers are voracious. The brass hanging rod won't corrode with the threaded insert in the dish, making it dependably durable. The cap even has a nectar recipe engraved on it so you'll never lose it. Threaded area in the bottom of the feeder dish gives you the option of pole mounting the feeder using a pole adapter. 9 1/2" diameter.