Atlanta biologists Young-Hui Chang of Georgia Tech and Lena ting of Emory University wanted to find out how Flamingos can sleep standing on one leg. Their findings that were published in Biology Letters this week are surprising.
Source: The Washington Post, May 24, 2017 (paywall).
The duo began examining them, when something happened. Chang held one of the cadavers up by its leg, which immediately snapped into place. He was able to place the dead bird on the table, where it stood as if it were merely sleeping.