Atrial fibrillation (AF or A-fib) is an abnormal heart rhythm characterized by rapid and irregular beating.
Emperor penguins owe their scientific name (Aptenodytes forsteri) to their discoverer, the first natural scientist to reach Antarctica, the German Johann Reinhold Forster. Forster came to Antarctica in 1770, on Captain James Cook's ship, and saved Cook's life during the voyage.
Population and range. Yellow-eyed penguins are found along the south-east South Island, on islands off Stewart Island, Stewart Island itself, the Auckland Islands and Campbell Island.Hoiho and chicks. Unique to New Zealand, the hoiho, or yellow-eyed penguin, is thought to be the world's rarest penguin.opulation and range. Yellow-eyed penguins are found along the south-east South Island, on islands off Stewart Island, Stewart Island itself, the Auckland Islands and Campbell Island.