California Gull
Larus californicus
- KingdomAnimalia (Animals)
- PhylumChordata (Cordats)
- ClassAves (Aus)
- OrderCharadriiformes (Caradriformes)
- FamilyLaridae (Gulls, Terns, and Skimmers)
- GenusLarus (Large White-headed Gulls)
- SpeciesLarus californicus (California Gull)
Closest Relatives at Rocky Mountain National Park
Ring-billed Gull
Larus delawarensis
American Herring Gull
Larus smithsonianus
Lesser Black-backed Gull
Larus fuscus
Iceland Gull
Larus glaucoides
Larus pipixcan
Leucophaeus pipixcan
Bonaparte's Gull
Chroicocephalus philadelphia
Sabine's Gull
Xema sabini
Forster's Tern
Sterna forsteri
Caspian Tern
Hydroprogne caspia
Black Tern
Chlidonias niger
Spotted Sandpiper
Actitis macularius
Wilson's Snipe
Gallinago delicata
📅 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
Quick answers
What are the chances of seeing a California Gull in Rocky Mountain National Park?
About 1% of visitor-days record a California Gull sighting in Rocky Mountain National Park, based on 58 observer-days of citizen-science data from GBIF.
When is the best time to see California Gull in Rocky Mountain National Park?
January has the highest sighting rate for California Gull in Rocky Mountain National Park in our monthly data.