Cassin's Auklet
Ptychoramphus aleuticus
- KingdomAnimalia (Animals)
- PhylumChordata (Cordats)
- ClassAves (Aus)
- OrderCharadriiformes (Caradriformes)
- FamilyAlcidae (Auks, Murres, and Puffins)
- GenusPtychoramphus (Cassin's Auklets)
- SpeciesPtychoramphus aleuticus (Cassin's Auklet)
Closest Relatives at Channel Islands National Park
Pigeon Guillemot
Cepphus columba
Rhinoceros Auklet
Cerorhinca monocerata
Common Murre
Uria aalge
Scripps's Murrelet
Synthliboramphus scrippsi
Craveri's Murrelet
Synthliboramphus craveri
Horned Puffin
Fratercula corniculata
Guadalupe Murrelet
Synthliboramphus hypoleucus
Ancient Murrelet
Synthliboramphus antiquus
Marbled Murrelet
Brachyramphus marmoratus
Western Gull
Larus occidentalis
California Gull
Larus californicus
Heermann's Gull
Larus heermanni
📅 Monthly Probability
☀️ When They're Spotted
Most active during daytime hours (6am–6pm) · across all parks (global)
Global Distribution
Where this species is recorded worldwide. Restricted to human observations from 2019 onwards — the same kind of record and the same period the probabilities on this page are built from, so collar-tracking studies, camera-trap arrays and museum specimens are excluded. Around Santa Rosa that removes 5,924 GPS fixes from a handful of tagged jaguars.
where this species is recorded (GBIF density — it tracks where observers go, not how likely a sighting is) · parks where it occurs — tap a pin for the sighting probability there
Parks Where Found
| # | Park | Country | Probability |
|---|---|---|---|
| 1 | Channel Islands National Park | 🇺🇸 United States | |
| 2 | Great Bear Rainforest | 🇨🇦 Canada | |
| 3 | Pacific Rim National Park Reserve | 🇨🇦 Canada | |
| 4 | El Vizcaíno Biosphere Reserve | 🇲🇽 Mexico | |
| 5 | Olympic National Park | 🇺🇸 United States | |
| 6 | Kenai Fjords National Park | 🇺🇸 United States | |
| 7 | Wrangell-St. Elias National Park | 🇺🇸 United States |
Quick answers
What are the chances of seeing a Cassin's Auklet in Channel Islands National Park?
About 8% of visitor-days record a Cassin's Auklet sighting in Channel Islands National Park, based on 569 observer-days of citizen-science data from GBIF.
When is the best time to see Cassin's Auklet in Channel Islands National Park?
November has the highest sighting rate for Cassin's Auklet in Channel Islands National Park in our monthly data.