ナショナルジオグラフィックさんのインスタグラム写真 - (ナショナルジオグラフィックInstagram)「Photo by @jasperdoest | Flamingo Bob keeps an eye on the world while resting. Have you ever noticed a sleeping flamingo standing on one leg and maintaining perfect posture? This is because birds, like fish, also possess the ability to sleep with half of their brains. In the flamingo’s case, this is thought to allow them to keep standing on the leg that is controlled by the "awake" side of the brain, while the other brain hemisphere sleeps, allowing them to lower their metabolism and reap sleep’s other benefits. Some can even sleep with one eye open. This ability is called unihemispheric slow-wave sleep, and it is believed to help animals be alert to potential predators. Find out more about Flamingo Bob in the February issue of the magazine or follow @jasperdoest. #birdrescue #flamingo #prettyinpink #flamingobob Check out Nat Geo's Instagram story today for more.」2月15日 12時35分