Taxonomy
The King Penguin was described in 1778 by English naturalist and illustrator John Frederick Miller, its generic name derived from the Ancient Greek a/α 'without' pteno-/πτηνο- 'able to fly' or 'winged' and dytes/δυτης 'diver'. Its specific epithet patagonicus derived from Patagonia.
Together with the similarly coloured but larger Emperor Penguin (A. forsteri), it is one of two extant species in the genus Aptenodytes. Fossil evidence of a third species—Ridgen's Penguin (A. ridgeni)—has been found in fossil records from the late Pliocene, about three million years ago, in New Zealand. Studies of penguin behaviour and genetics have proposed that the genus Aptenodytes is basal; in other words, that it split off from a branch which led to all other living penguin species. Mitochondrial and nuclear DNA evidence suggests this split occurred around 40 million years ago.
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