puffin

puffin is any of three species of small auks in the bird genus Fratercula with a brightly colored beak during the breeding season. These pelagic seabirds are highly adapted for life on the open ocean, though they return to coastal cliffs and islands to form large breeding colonies. Known for their distinctive appearance and charismatic behavior, puffins are often referred to as "clowns of the sea" or "sea parrots."

Description

Puffins are stout birds, characterized by black and white plumage, stocky bodies, and large, triangular beaks that become vividly colored in the breeding season. The Atlantic puffin's beak is striped with orange, yellow, and blue-gray, while the Horned puffin sports a yellow-tipped orange bill and the Tufted puffin has a deep orange bill with yellow plumes. Their wings are relatively short, adapted for swimming underwater using a flying motion, and their feet are set far back on the body, making them efficient divers but awkward on land. In winter, the bright beak plates are shed, and the face becomes darker.

Distribution and habitat

Puffins have a circumpolar distribution primarily in the cold waters of the North Atlantic Ocean and North Pacific Ocean. The Atlantic puffin breeds on coasts and islands from Greenland and Iceland to Norway, the British Isles, and as far south as Maine in North America. The Horned puffin and Tufted puffin are found in the North Pacific, breeding from British Columbia and Alaska across the Aleutian Islands to Siberia and Japan. Outside the breeding season, they are entirely pelagic, dispersing over the open ocean, sometimes venturing far south of their breeding ranges.

Behavior and ecology

Puffins are social birds, nesting in large, noisy colonies on grassy cliff tops or in burrows on predator-free islands. They are monogamous, often returning to the same mate and burrow each year. Their diet consists almost exclusively of small forage fish, such as sand eels, capelin, and herring, which they catch by diving and using their specialized beaks to hold dozens of fish crosswise. Predators at colonies include great black-backed gulls, Arctic skuas, and introduced mammals like brown rats. At sea, they may fall prey to Greenland sharks or orcas.

Species

The genus Fratercula contains three extant species. The Atlantic puffin (Fratercula arctica) is the only species found in the Atlantic Ocean and is the national bird of the Norwegian county of Røst. The Horned puffin (Fratercula corniculata), named for the small, fleshy "horn" above its eye, and the Tufted puffin (Fratercula cirrhata), distinguished by long, yellow head plumes, are both Pacific species. A fourth, extinct species, the dow's puffin, is known from fossils found in the Channel Islands of California.

Conservation status

According to the International Union for Conservation of Nature, the Atlantic puffin is classified as Vulnerable due to rapid population declines in key regions like Iceland and Norway, driven by food shortages from climate change and overfishing. The Horned puffin is listed as of Least Concern, though some local declines are noted. The Tufted puffin is also considered Least Concern globally but is endangered in Washington and of serious concern in Oregon and California. Major threats include oil spills, plastic pollution, entanglement in gillnets, and predation by invasive species on breeding islands.

Category:Alcidae Category:Seabirds