Lesser Black-backed Gull
Larus fuscus
- KingdomAnimalia (Animals)
- PhylumChordata (Cordats)
- ClassAves (Aus)
- OrderCharadriiformes (Caradriformes)
- FamilyLaridae (Gulls, Terns, and Skimmers)
- GenusLarus (Large White-headed Gulls)
- SpeciesLarus fuscus (Lesser Black-backed Gull)
The lesser black-backed gull (Larus fuscus) is a large gull that breeds on the Atlantic and Arctic coasts of Europe. It is migratory, wintering from the British Isles south to West Africa. However, it has increased dramatically in North America, especially along the east coast. Formerly just a winter visitor to North America, it now occurs in large numbers some winters and birds are recorded year-round. However, there is serious concern about decline in many parts of its range. The species is on the UK Amber List because the UK is home to 40 per cent of the European population and more than half of these are found at fewer than ten breeding sites. Wikipedia →
Closest Relatives at Tortuguero National Park
American Herring Gull
Larus smithsonianus
Ring-billed Gull
Larus delawarensis
Royal Tern
Thalasseus maximus
Laughing Gull
Leucophaeus atricilla
Franklin's Gull
Leucophaeus pipixcan
Sandwich Tern
Thalasseus sandvicensis
Brown Noddy
Anous stolidus
Black Skimmer
Rynchops niger
Black Tern
Chlidonias niger
Common Tern
Sterna hirundo
Gull-billed Tern
Gelochelidon nilotica
Caspian Tern
Hydroprogne caspia
📅 Monthly Probability
Fewer than 5 records of Lesser Black-backed Gull at Tortuguero National Park — not enough to chart months honestly.
☀️ 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