When a male Anna’s hummingbird pulls out of a courtship dive at roughly 60 miles per hour, the air ripping through his outer tail feathers produces a loud, sharp chirp. It is not a vocalization. No ...

Once you hear it, the sound becomes an iconic multifaceted auditory image. And that sound would be the whirring hum of hummingbird wings. Hummingbirds comprise one of two families in the bird order ...