Whiskered Auklet

The Whiskered Auklet, Aethia pygmaea, is a diminutive member of the auk family, notable for its striking breeding plumage that includes long white facial feathers, or "whiskers." Among the smallest of the alcids, it is surpassed in size only by its close relative, the Least Auklet.

Identification Tips

This species can be recognized by its unique facial adornments, which are most prominent during the breeding season. The Whiskered Auklet also exhibits a distinctive plumage that carries a surprising hint of citrus to the discerning nose.

Habitat

The Whiskered Auklet is a seabird that favors the marine environment around the Aleutian Islands and certain islands off Siberia, such as the Commander Islands.

Distribution

Its range is more restricted compared to other members of the genus Aethia, with its presence largely confined to the Aleutian archipelago and select Siberian islands.

Behaviour

The Whiskered Auklet is a year-round resident of its breeding islands, displaying an unusual trait for its family by roosting on land throughout the year. It is a sociable bird, nesting in loose colonies alongside other Whiskered Auklets and various colonial seabirds.

Breeding

A single egg is laid in a rocky crevice, with both parents sharing the responsibilities of incubation and chick rearing. The bird's facial "whiskers" are believed to serve a mechanosensory function, aiding in navigation through the crevices to and from their nests in the darkness.

Diet and Feeding

During the summer, the Whiskered Auklet predominantly feeds on copepods, particularly the species Neocalanus plumchrus. As the seasons turn to fall and winter, its diet shifts to euphausiid krill. It forages in the inshore zone, often within 16 kilometers of land, where tidal currents create dense swarms of prey.

Conservation status

The Whiskered Auklet is currently classified as Least Concern by the IUCN. However, it faces threats from fishing boats, as it is drawn to their lights at night.