Sandwich Tern
Thalasseus sandvicensis
- KingdomAnimalia (Animals)
- PhylumChordata (Cordats)
- ClassAves (Aus)
- OrderCharadriiformes (Caradriformes)
- FamilyLaridae (Gulls, Terns, and Skimmers)
- GenusThalasseus (Crested Terns)
- SpeciesThalasseus sandvicensis (Sandwich Tern)
Closest Relatives at Tortuguero National Park
Royal Tern
Thalasseus maximus
Elegant Tern
Thalasseus elegans
Laughing Gull
Leucophaeus atricilla
Larus pipixcan
Leucophaeus pipixcan
Lesser Black-backed Gull
Larus fuscus
Brown Noddy
Anous stolidus
Black Skimmer
Rynchops niger
Black Tern
Chlidonias niger
Common Tern
Sterna hirundo
American Herring Gull
Larus smithsonianus
Gull-billed Tern
Gelochelidon nilotica
Caspian Tern
Hydroprogne caspia
📅 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 Sandwich Tern in Tortuguero National Park?
About 3% of visitor-days record a Sandwich Tern sighting in Tortuguero National Park, based on 78 observer-days of citizen-science data from GBIF.
When is the best time to see Sandwich Tern in Tortuguero National Park?
January has the highest sighting rate for Sandwich Tern in Tortuguero National Park in our monthly data.