Aethia pygmaea (Whiskered Auklet) is a species of birds in the family auks. They are found in the palearctic and The Nearctic. Individuals are known to live for 15 years.
Definition: The largest scale biogeographic division of the earth's surface based on the historic and evolutionary distribution patterns of plants and animals.
Definition: Single birth offspring quantity. The proportion or number of offspring produced from a single pregnancy (mammals) or ovulation (fish) or nesting (birds).