Tim Cope

In 1736, Bakhchisaray had been burned to the ground by the Russians, and when Catherine II's army completed the conquest of the peninsula in 1783, the last khan, Sahin Giray, took refuge in Turkey, where he was eventually executed.

An ancient Scythian nomad skeleton buried with an eagle was reportedly excavated near Aktobe Gorge, Kazakhstan. Ancient petroglyphs in the Altai region depict eagle hunters, and inscribed Chinese stone reliefs show eagles perched on the arms of hunters in tunics, trousers, and boots, identified as northern nomads (1st to 2nd century A.D.).

If you think about evolution, sleep, at some time, was a dangerous undertaking. You lie down in your cave or shelter, and along comes a predator and has you for dinner. Many creatures do not sleep or sleep while standing so they can escape from dangerous situations.