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.
Eudyptula is a âmonotypicâ genus. It comprises only a single species, the Little Penguin. The Little Penguin is different in many ways from all other penguins. It is the smallest of all penguins and the only nocturnal species.Its more horizontal posture gives it a different silhouette compared to the upright stance of other species.In many respects, however, Eudyptula is an Antipodean version of Spheniscus, the genus of banded penguins.t is the smallest of all penguins and the only nocturnal species. Its more horizontal posture gives it a different silhouette compared to the upright stance of other species. In many respects, however, Eudyptula is an Antipodean version of Spheniscus, the genus of banded penguins.