Rhinoceros Auklet

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Common Name: Rhinoceros Auklet

Scientific Name: Cerorhinca monocerata

Size: 15 inches (38 cm)

Habitat: North Pacific: Breeds from California (the Channel Islands) to the Aleutian Islands in Alaska in North America; and Hokkaidō and Honshū, Japan, as well as North Korea and Sakhalin Island in Asia. It winters both in offshore and inshore waters, exhibiting some migration

Status: Least Concern. Global Population: 1,300,000 mature individuals.

Diet: Fish, with some krill and squid when at sea. They feed inshore during the breeding season in the mid-water. To catch their prey, they dive to as deep as 57 meters (187 ft) for as long as 148 seconds.

Nesting: Nests in burrows dug into the soil or in natural caves and cavities between 1 to 5 m deep. It prefers nesting sites on slight inclines to aid take-off (as it is a poor flier). A single egg is incubated by both parents for 45 days, the semiprecocial chick is then fed each night with a bill full of fish (in the manner of puffins) for 50 days. The nocturnal behavior is believed to be a response to predation by gulls.

Cool Facts: Its name is derived from a horn-like extension of the beak. This horn is only present in breeding adults, and like the elaborate sheath on the bill of puffins is shed every year. The Rhinoceros Auklet is also known as the Rhino Auklet, Horn-billed Puffin, or Unicorn Puffin. It is the only living species of the genus Cerorhinca.

The Rhinoceros Auklet gives a series of 7 to 12 mellow "moo" notes sound much like a cow when near the colony. This is done to aid in location of its mate at night.

Found in Songbird ReMix Puffins

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