Cassin’s Auklet
Photo: Duncan Wright · CC BY-SA 3.0

Auks, Puffins, and Murres

Cassin’s Auklet

Ptychoramphus aleuticus

NTNear Threatened
Family
Auks, Puffins, and Murres (Alcidae)
Order
Charadriiformes

Overview

Cassin's auklet (Ptychoramphus aleuticus) is a small, chunky seabird that ranges widely in the North Pacific. It is the only species placed in the genus Ptychoramphus. It nests in small burrows and because of its presence on well studied islands in British Columbia and off California it is one of the better known auks. It is named for the American ornithologist John Cassin.

Summary from Wikipedia, available under CC BY-SA 4.0.

Range and habitat

Sources and further reading

Last updated September 29, 2026.