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 Marino Ballena National Park
Royal Tern
Thalasseus maximus
Elegant Tern
Thalasseus elegans
White Tern
Gygis alba
Laughing Gull
Leucophaeus atricilla
Brown Noddy
Anous stolidus
Black Tern
Chlidonias niger
Larus pipixcan
Leucophaeus pipixcan
Gull-billed Tern
Gelochelidon nilotica
Common Tern
Sterna hirundo
Least Tern
Sternula antillarum
Sabine's Gull
Xema sabini
Bridled Tern
Onychoprion anaethetus
📅 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 Marino Ballena National Park?
About 3% of visitor-days record a Sandwich Tern sighting in Marino Ballena National Park, based on 43 observer-days of citizen-science data from GBIF.
When is the best time to see Sandwich Tern in Marino Ballena National Park?
March has the highest sighting rate for Sandwich Tern in Marino Ballena National Park in our monthly data.