French: Starique de Cassin German: Aleutenalk Spanish: Mérgulo sombrío
north Pacific Ocean
Subspecies and Distribution
P. a. aleuticus
(Pallas, 1811) – Aleutian Is to SW & SE Alaska, then S to N Baja California (islands of San Gerónimo, San Martín and Guadalupe).
P. a. australis
van Rossem, 1939 – W Baja California from San Benito Is S to Asunción I and San Roque I.
23 cm; 150–200 g; wingspan 38 cm. Small, plump alcid; short blackish-grey bill with base of mandible yellowish; white iris; dark greyish-brown head, fading to paler... read more
Generally silent at sea. At breeding colonies, usually heard from inside nesting burrows. Adults... read more
Offshore and along sea coasts, mostly over continental shelf to edge, but often beyond into deep... read more
Food and feeding
Mostly crustaceans throughout year, supplemented by other invertebrates and small larval fish. Quantitative information largely restricted... read more
Arrival at colony and start of laying vary greatly with latitude, due largely to differences in oceanographic conditions; nests late Nov to... read more
Winters mainly offshore within breeding range. S populations relatively sedentary, staying at sea... read more
Status and conservation
Not globally threatened. Currently considered Near Threatened. Population sizes and trends relatively well known, though distribution and estimates of Alaskan and Mexican... read more
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