Auks (Alcidae)

Cassin's Auklet (Ptychoramphus aleuticus) - HBW 3, p. 717

French: Starique de Cassin German: Aleutenalk Spanish: Mérgulo Sombrío
Other common names: Aleutian Auk

Taxonomy: Uria Aleutica Pallas, 1811, north Pacific Ocean.
Apparent racial variation may be clinal. Two subspecies provisionally recognized.

Subspecies and Distribution:

  • aleuticus (Pallas, 1811) - Aleutian Is to SW & SE Alaska, then S to N Baja California (San Geronimo, San Martin and Guadalupe Is).
  • australis van Rossem, 1939 - W Baja California from San Benito Is S to Asuncion and San Roque Is.

  •      No sound recordings available yet