light brown king penguins with melanism on south georgia. a genetic mutation causes unusual brown plumage colouration.

bird animal beak wildlife seabird waterbird gull wing zoo shorebird sea mammal ducks waterfowl duck heron rare sight light brown king penguins melanism south georgia genetic mutation causes unusual plumage colouration amazing eye face photography portrait antarctica aptenodytes patagonicus beauty nature black close detail colour dark emperor penguin fascinating genetics impressive incredible melanin overproduction pigmentation stock photo unique water wild wonderful