Atrial fibrillation (AF or A-fib) is an abnormal heart rhythm characterized by rapid and irregular beating.
Emperor penguin - Aptenodytes forsteri. This is the largest species of penguins. Emperor penguins are only found on and around the Antarctic continent, on the thick pack ice and rarely on mainland. They have a pale yellow, open (breast and chin patch are one) patch on chin and breast. A long, thin and curved bill, typical for fish eaters. Very dark grey back and blue black head.
Fiordland Penguin. The Fiordland Penguin lives in the temperate rainforest of the southwest coast of the South Island and Stewart Island, New Zealand, where it is endemic. Identification: Similar to Snares Penguin, with a thick yellow stripe running above the eye and ending in a dropping plume.