Image description: This composite image shows a single male hummingbird diving to a female. His tail feathers are spread to make a loud sound at the bottom. This courtship display is unusual because it features sound created with feathers instead of chirps or other vocalizations.
The image is part of research on feathers and sound taking place at the Peabody Museum of Natural History at Yale University and supported by the National Science Foundation (NSF).
Image courtesy of NSF.
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