Data from: Complex coevolution of wing, tail, and vocal sounds of courting male bee hummingbirds

Christopher J. Clark, Jimmy A. McGuire, Elisa Bonaccorso, Jacob S. Berv & Richard O. Prum
Phenotypic characters with a complex physical basis may have a correspondingly complex evolutionary history. Males in the ‘bee’ hummingbird clade court females with sound from tail-feathers, which flutter during display dives. On a phylogeny of 35 species, flutter sound frequency evolves as a gradual, continuous character on most branches. But on at least six internal branches fall two types of major, saltational changes: mode of flutter changes, or the feather that is the sound source...
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These counts follow the COUNTER Code of Practice, meaning that Internet robots and repeats within a certain time frame are excluded.
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