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An Adélie penguin encountering a human during the Antarctic summer. Penguins have no special fear of humans and will often approach groups of people. This is probably because penguins have no land predators in Antarctica or the nearby offshore islands. They are preyed upon by other birds like skuas, especially in eggs and as fledglings.
The physiology of underwater diving is the physiological adaptations to diving of air-breathing vertebrates that have returned to the ocean from terrestrial lineages. They are a diverse group that include sea snakes, sea turtles, the marine iguana, saltwater crocodiles, penguins, pinnipeds, cetaceans, sea otters, manatees and dugongs.
The flightless penguins are almost all located in the Southern Hemisphere (the only exception is the equatorial Galapagos penguin), with the greatest concentration located on and around Antarctica. Four of the eighteen penguin species live and breed on the mainland and its close offshore islands.
The great auk (Pinguinus impennis), also known as the penguin or garefowl, is an extinct species of flightless alcid that first appeared around 400,000 years ago and became extinct in the mid-19th century. It was the only modern species in the genus Pinguinus.
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Bergmann's rule - Penguins on the Earth (mass m, height h) [1] Bergmann's rule is an ecogeographical rule that states that, within a broadly distributed taxonomic clade, populations and species of larger size are found in colder environments, while populations and species of smaller size are found in warmer regions.
Humans tend to give each other rings to show their intentions, while penguins do things their own way. Males will give a female penguin a shiny pebble or rock to make it clear that they wish to ...
Nature is a wildlife television series produced by Thirteen/WNET New York. It has been distributed to United States public television stations by the PBS television service since its debut on October 10, 1982. Some episodes may appear in syndication on many PBS member stations around the United States and Canada, and on the Discovery Channel. As of 2022, the series airs on Wednesdays on PBS ...