Do hummingbirds learn displays by watching others?

Biologists know that hummingbirds can adapt their vocalizations by listening to others. Can they adapt their visual displays by watching others, too? In a study in Proceedings of the Royal Society B, researchers looked at the visual displays that male long-billed hermit hummingbirds (Phaethornis longirostris) use to attract mates and defend their territory. They found each community of birds has its own variations on both the songs and the displays, indicating social learning.

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