Wednesday, 17 March 2021

The Humming of the Hummingbird

A Physics study at Stanford University has solved why Hummingbirds hum (https://www.theguardian.com/science/2021/mar/16/scientists-unlock-secret-of-why-hummingbirds-hum). Somewhat predictably, the hum is produced by the bird's unusual hovering, flight pattern. Unlike other birds, hummingbirds generate lift on both the up- and the down-strokes of their wings. Hummingbirds also beat their wings much faster than other species. It's the pressure changes produced by the wing movements, generating the distinctive hum!
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Flowers of Oahu 64. Wikstoemia uva-ursi or Akia

The bark, roots and leaves of this plant release a narcotic that was used to stun fish.

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