Description: (curated)

`Two hummingbirds appear still as they hover by a feeder, their wings beating at sixty times a second. This high-speed photograph (likely taken in 1938) was shot using an exposure of 1/100,000 of a second. Accurate observations of these birds' activities had eluded naturalists before the advent of flash photography. (CC)

HEE-NC-38018

Keywords:

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