Cassin's Auklet (Ptychoramphus aleuticus)

Other Names (World)
Cassin's Auklet, Aleutian Auk

Family
Alcidae (Auks)

Size
23 cm

First Described (Guide)
(Pallas, 1811)

Habitat
Offshore and along sea coasts, mostly over the continental shelf to the edge but also beyond into deep ocean.

Range (Guide)

Canada (B), Mexico, USA (B).

Rarity Status
Currently this species is not classified as a rarity in this country OR information has not been updated.

Population
Estimated population is 2,500,000 - 5,000,000 (2010).

Status NT
For more information see BirdLife International Species Factsheet.

Food
Mostly crustaceans throughout the year, supplemented by other invetebrates and small larval fish.

Voice
Generally silent away from colonies.

Xeno-Canto Sound Files (more (14)...)

Cassin's Auklet (Ptychoramphus aleuticus) [XC842462]
by Matthew L. Brady from San Francisco, San Francisco County, California, United States (song)

Cassin's Auklet (Ptychoramphus aleuticus) [XC77857]
by Luke Halpin; Gwaii Haanas National Park Reserve and Haida Heritage Site Seabird Research Group from Southeast Farallon Island, United States (call)

Subspecies
Apparent racial variation may be clinal.

The following 2 subspecies are recognised:

aleuticus (Pallas, 1811) - Aleutian Is to south-western and south-eastern Alaska, then south to northern Baja California (San Geronimo, San Martin and Guadalupe Is).
australis van Rossem, 1939 - Western Baja California from San Benito Is south to Asuncion and San Roque Is.

References
See References.

Files:

JPG files for Cassins Auklet (Ptychoramphus aleuticus) - 10 files

More Information

BirdLife International

For more information about the Cassins Auklet see... Show Articles

BirdLife International Species Factsheet.

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