Azure-crowned Hummingbird Amazilia cyanocephala
Version: 1.0 — Published October 4, 2013
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Sounds and Vocal Behavior
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The principal vocalization of Azure-crowned Hummingbird is described as "a low, fairly hard, buzzy dzzzrt in flight and perched, [which may be] repeated steadily from perch" (Howell and Webb 1995). Also has a "fairly mellow, strong chipping, at times run into a trill or rattle" (Howell and Webb 1995). The vocalizations of the isolated subspecies chlorostephana apparently have not been described (Howell and Webb 1995).
None reported, other than the usual "whirring" or "humming" sound of the wings in flight, audible (as in most hummingbirds) at close range.