
Cassin's Auklet
Ptychoramphus aleuticus (Pallas, 1811)
184 gWeight
Cassin's auklet (Ptychoramphus aleuticus) is a small, chunky seabird that ranges widely in the North Pacific.
Busiest months: November · Most records: United States, Canada, Mexico
Where and when it's recorded
Cassin's Auklet has been recorded at 29 of the 8,171 birding hotspots we track, in 3 countries and regions.
Records by month Northern Hemisphere
Where it's recorded most
- Southeast Farallon IslandUnited States12,081 records
- Pt. Pinos – seawatch onlyUnited States2,680 records
- Pt. PinosUnited States149 records
More places
- Discovery ParkUnited States70 records
- Clover PointCanada62 records
- Rocky Point Bird ObservatoryCanada61 records
- Pillar Point HarborUnited States57 records
- Neah Bay – town and bay onlyUnited States36 records
- Point No PointUnited States34 records
- Bodega Bay – harbor and immediate vicinityUnited States19 records
Countries and regions with the most records
eBird records via GBIF up to 2024-12-31. A record means someone listed it; more records partly mean more birders, not more birds.
About
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.
Excerpt from Wikipedia, CC BY-SA 4.0 · authors · Read more on Wikipedia
Questions
How big is the Cassin's Auklet?
The Cassin's Auklet weighs around 184 g.
Where does the Cassin's Auklet live?
Its breeding range: North America, Middle America: eastern North Pacific coastal islands. It is most often recorded in United States, Canada and Mexico.
When is the best time to see the Cassin's Auklet?
At the hotspots we track, it is recorded most in November (Northern Hemisphere).
Is the Cassin's Auklet endangered?
The IUCN Red List classifies the Cassin's Auklet as Near Threatened.
What does the Cassin's Auklet eat?
Main food: Fish, shrimp & shellfish.
What family is the Cassin's Auklet in?
It belongs to the family Auks (Alcidae), order Charadriiformes.
At a glance
- Weight
- 184 g
- Habitat
- Ocean
- Diet
- Fish, shrimp & shellfish
- Lifestyle
- On the water surface
- Migration
- Migratory
- Conservation
- Near Threatened
More measurements
- Wing
- 121 mm
- Tail
- 32 mm
- Bill
- 24 mm
- Tarsus
- 24 mm
Averages from the AVONET dataset; length from field guides where available.
Range
North America, Middle America: eastern North Pacific coastal islands
Breeding range, IOC World Bird List 15.2
Classification
- Order
- Charadriiformes
- Family
- Auks Alcidae
- Genus
- Ptychoramphus
More from the family Auks
Rhinoceros AukletCerorhinca monocerata
Tufted PuffinFratercula cirrhata
Atlantic PuffinFratercula arctica
Horned PuffinFratercula corniculata
Least AukletAethia pusilla
Whiskered AukletAethia pygmaea
Crested AukletAethia cristatella
Parakeet AukletAethia psittacula
Long-billed MurreletBrachyramphus perdix
Kittlitz's MurreletBrachyramphus brevirostris
Download illustration
Free to use with credit: “Illustration: Bird Album (birdalbum.com)”. Drawn by AI from a reference photo by Oscar Johnson. ↗
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