The largest bird to fly, Argentavis magnificens, was believed to have flown like a high-performance glider and lived 6 million years ago in Argentina. It was close to the size of a Cessna 152 airplane. The board soared on the winds like a glider and could reach speeds of up to 150 mph. Experts are still not sure how it achieved landing and takeoff.
10 of the biggest animals to roam the planet