Why do hummingbirds eat out of one feeder and not the one next to it same kind of feeder?

Hummingbirds may prefer one feeder over another due to factors such as nectar freshness, feeder location, and visibility. They are also highly territorial and may defend their chosen feeder from other birds, leading to a preference for that specific source. Additionally, the colors or designs of the feeders might attract them differently, influencing their choices. Environmental conditions, like sunlight and wind, can also affect their feeding behavior.