Rhinoceros Auklet or Parakeet Auklet?

General appearance

The Rhinoceros Auklet is a medium-sized seabird primarily characterized by a robust body and a distinct horn-like structure on its beak during breeding seasons. Its coloration features a dark, slate-colored plumage with a contrasting white belly. The bird's head is slightly darker, and it possesses small white facial plumes that give the appearance of whiskers. It has a stout, orange-yellow bill with a prominent bright orange horn in mature individuals during the breeding period, which is less prominent in non-breeding seasons.

Male vs female

Males and females of the Rhinoceros Auklet species are quite similar in appearance, making it challenging to distinguish between sexes based solely on visual observation. Both sexes exhibit the same plumage and bill characteristics. However, males might appear slightly larger and more robust than females, a difference observable mainly when both sexes are in proximity.

Juvenile

Juvenile Rhinoceros Auklets differ from adults primarily in plumage and bill structure. Young birds display duller and more uniform gray tones, lacking the defined contrast between their upper bodies and bellies seen in adults. Additionally, juveniles do not have the distinctive horn on their bills. The bill appears shorter and less colorful. As they mature, juveniles gradually acquire adult plumage and the characteristic bill horn that defines mature Rhinoceros Auklets.

Primary habitat

Rhinoceros Auklets primarily inhabit the northern Pacific Ocean, spanning from Alaska to Northern California. They favor rocky coastlines and small islands for breeding, often returning to the same nesting sites each year. They thrive in cool, marine environments with rich food sources, such as schools of fish and squid that are abundant in these waters.

Additional range

Although commonly found in cooler climates, Rhinoceros Auklets can occasionally be spotted further south along the Pacific Coast. They may also adapt to different coastal conditions, including sandy shores or sheltered bays, depending on food availability and competition from other seabirds.

Natural diet

The Rhinoceros Auklet is a seabird with a diet primarily composed of fish and aquatic invertebrates. In the wild, they feast on small fish such as anchovies, sand lance, and herring. These birds are adept divers, able to plunge beneath the water to capture their prey efficiently. Depending on the season, their diet may vary slightly based on the availability of specific fish species. During the breeding season, they might carry multiple fish to their chicks, indicating a dietary focus on higher protein content to ensure the chicks' growth.

Bird feeders

Rhinoceros Auklets are not typically attracted to bird feeders due to their marine-based diet. They hunt and feed at sea, predominantly requiring a supply of fish that are unavailable in backyard settings. Thus, they do not consume the typical seed mixes, suet, or fruits found at feeders for land-based birds. For those interested in observing Rhinoceros Auklets, visiting coastal areas during their feeding times may provide a better view than attempting to attract them to a bird feeder.