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Sound Gallery - Calliope Hummingbird

A vivid red throat is a standout feature of the Calliope hummingbird. — A vivid red throat is a standout feature of the Calliope hummingbird.
NPS photo

Spectrogram of a Calliope hummingbird — Spectrogram of a Calliope hummingbird.
NPS photo

Last updated: May 17, 2016

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