[extropy-chat] high tech birds

Russell Wallace russell.wallace at gmail.com
Tue Oct 17 05:03:13 UTC 2006

Ravens are interesting birds, though I've only ever seen one face to face
once and it was merely glancing around the airport car park at the time. But
another invention of theirs I've read about is landing on top of street
lights and covering the photocell with their wings; the light comes on,
generating enough heat to keep the bird warm on a winter's day. Probably
again one bird discovered it by accident and remembered the trick, and
others saw and copied.
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