This bird feeder has three sizes, with eight flower-shaped feeding mouths arranged at a suitable distance, which can accommodate more than eight hummingbirds at the same time. So you can have a longer time to observe more hummingbirds at the same time. It has excellent suspension design, and there is no need to worry about jitter. We have designed a hanging hummingbird feeder with excellent stability. After testing in various scenarios, the hummingbird feeder will not shake significantly, no matter in strong wind or heavy rain, or with multiple hummingbirds standing at the same time.