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Other hardy souls signed up for an early morning “Ostrich Run” 5k, with the prizes beinging–you guessed it–actual ostricheggs. Emptied of their contents, of course.). A few days later, I was the assistant (a glorified gofer , if you will) for a morning-long session on migration.
Among birds the Egyptian Vulture uses rocks to crack Ostricheggs, the New Caledonian Crow and Woodpecker Finch (one of several Darwin Finches of the Galapagos Islands), uses sticks to extract grubs from inside a branch. Egyptian Vultures raised is isolation used rocks to crack eggs presented to them. The behavior was inherent.
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