Ring-billed Gull
Larus delawarensis
- KingdomAnimalia (Animals)
- PhylumChordata (Cordats)
- ClassAves (Aus)
- OrderCharadriiformes (Caradriformes)
- FamilyLaridae (Gulls, Terns, and Skimmers)
- GenusLarus (Large White-headed Gulls)
- SpeciesLarus delawarensis (Ring-billed Gull)
The ring-billed gull (Larus delawarensis) is a medium-sized gull native to North America, breeding in Canada and the northern Contiguous United States, and wintering mainly in the United States and northern Mexico. The genus name is from Latin Larus which appears to have referred to a gull or other large seabird. The specific delawarensis refers to the Delaware River. Wikipedia →
40–50% of wildlife watchers report a Ring-billed Gull sighting in El Vizcaíno Biosphere Reserve, based on 362 days of visitor records from GBIF citizen-science data.
Closest Relatives at El Vizcaíno Biosphere Reserve
Western Gull
Larus occidentalis
California Gull
Larus californicus
American Herring Gull
Larus smithsonianus
Heermann's Gull
Larus heermanni
Lesser Black-backed Gull
Larus fuscus
Yellow-footed Gull
Larus livens
Glaucous-winged Gull
Larus glaucescens
Iceland Gull
Larus glaucoides
Glaucous Gull
Larus hyperboreus
Caspian Tern
Hydroprogne caspia
Royal Tern
Thalasseus maximus
Forster's Tern
Sterna forsteri
📅 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 Ring-billed Gull in El Vizcaíno Biosphere Reserve?
About 43% of wildlife watchers report a Ring-billed Gull sighting in El Vizcaíno Biosphere Reserve, based on 362 days of visitor records from GBIF citizen-science data.
When is the best time to see Ring-billed Gull in El Vizcaíno Biosphere Reserve?
November has the highest sighting rate for Ring-billed Gull in El Vizcaíno Biosphere Reserve in our monthly data.