A photo from open sources
Just note that penguins live in conditions that we seem completely unsuitable for this. In Antarctica the average annual temperature is minus 49 degrees Celsius, and record – 89 degrees of frost. Add to this piercing wind up to a hundred meters per second – and the picture, as they say, is painted oil …
Despite such harsh climatic features of this mainland, penguins here feel quite comfortable, moreover and in such terrible frosts they also dive into ice water, being in it sometimes for hours. This applies to both king penguins and their smaller species – Adele. Both are equipped with a thick layer subcutaneous fat plus a magnificent down jacket (from thick feathers) – all this allows these unique birds to live seamlessly in Antarctica, in spite of its severity that seems to us, people, and even cruelty.
A photo from open sources
But it remains a mystery another circumstance that seems to us generally fiction: what about paws that are unprotected by either fat or fluff? these amazing birds? Why penguins do not freeze them, more Moreover, they are able to stand for hours on ice in extreme frosts and again, do not feel any discomfort? It turns out that promotes a specific circulatory system when veins and arteries are located nearby. Thanks to this cold venous blood warms up hot arterial, and in the paws penguins in this way maintains a constant temperature in 4 degrees Celsius.
This optimum temperature, on the one hand, does not allow birds frostbite paws, and on the other – does not interfere with them, that is, it does not affects ice (does not thaw it), which allows penguins for hours stand on it without any problems (at least not freezing in him) – how prudent all the same Mother Nature is, if not a real miracle!
Here they are, these amazing birds of Antarctica! By the way, white bears do not eat penguins, why do you think? ..
Antarctica Birds
