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20210120 南極丹科島附近的巴布亞企鵝 必應(yīng)壁紙

2021-01-20 00:02 作者:必應(yīng)壁紙  | 我要投稿


20210120 南極丹科島附近的巴布亞企鵝 ?必應(yīng)壁紙

巴布亞企鵝 南極丹科島附近的巴布亞企鵝 與大多數(shù)其他鳥類不同,企鵝不會飛,盡管這只企鵝看起來肯定在嘗試——或者因為今天是企鵝意識日而高興地跳起來。事實上,在南極半島附近的丹科島上,這些巴布亞企鵝被拍到跳出水面,回到它們的巢穴迎接11月開始的繁殖季節(jié)。就像其他鳥類的空氣動力學(xué)形狀一樣,企鵝的身體是流體動力學(xué)的,由于它們的流線型形狀和鰭狀翅膀,能夠在水中滑翔。巴布亞企鵝是游得最快的企鵝,時速可達(dá)22英里。大多數(shù)鳥類的骨骼是中空的,這有助于它們在空中飛行,而企鵝的骨骼在成年后會變得堅固。高密度的骨骼增加的重量幫助這些鳥在潛入寒冷的南極水域?qū)ふ颐牢兜暮ur時保持在水下。

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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