Cassin's Auklet
Ptychoramphus aleuticus
IUCN: Near Threatened
Taxonomy
- Order
- Charadriiformes
- Family
- Alcidae
- Genus
- Ptychoramphus
- eBird Code
- casauk
Subspecies (2)
-
Ptychoramphus aleuticus aleuticus
breeds Aleutian Islands and Alaska to northern Baja California; withdraws from north in winter
-
Ptychoramphus aleuticus australis
central Baja California (San Benito to Asunción and San Roque islands)
Data Sources
Taxonomy data from AviList 2025.