20210120 南极丹科岛附近的巴布亚企鹅 必应壁纸
巴布亚企鹅 南极丹科岛附近的巴布亚企鹅 与大多数其他鸟类不同，企鹅不会飞，尽管这只企鹅看起来肯定在尝试——或者因为今天是企鹅意识日而高兴地跳起来。事实上，在南极半岛附近的丹科岛上，这些巴布亚企鹅被拍到跳出水面，回到它们的巢穴迎接11月开始的繁殖季节。就像其他鸟类的空气动力学形状一样，企鹅的身体是流体动力学的，由于它们的流线型形状和鳍状翅膀，能够在水中滑翔。巴布亚企鹅是游得最快的企鹅，时速可达22英里。大多数鸟类的骨骼是中空的，这有助于它们在空中飞行，而企鹅的骨骼在成年后会变得坚固。高密度的骨骼增加的重量帮助这些鸟在潜入寒冷的南极水域寻找美味的海鲜时保持在水下。
原文:
Unlike most other birds, penguins can't fly, though this one sure looks like it's trying—or jumping for joy since today is Penguin Awareness Day. Actually, these gentoo penguins on Danco Island, just off the Antarctic Peninsula, were photographed leaping out of the water as they return to their nests for breeding season, which starts in November.Just as other birds are aerodynamically shaped, penguin bodies are aquadynamic, able to glide through water thanks to their streamlined shape and flipper-like wings. Gentoos are the fastest penguins, and can swim up to 22 mph. While most birds have hollow bones to help them stay aloft, penguin bones grow solid as they mature into adults. The added weight of the dense bones helps the birds stay submerged as they dive into the cold Antarctic waters in search of tasty seafood.
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