Describe the anecdote about the magpies from Georgiy Georgievich Shubin's notebook.

Georgiy Georgievich Shubin, the director of a forest zoo, observed nine magpies in an aviary. He noticed that wild magpies were jumping from trees and pecking at the cage. Upon closer inspection, he realized that his captive magpies were taking meat from their enclosure and passing it through the bars to the wild magpies outside.