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 Wadden Sea National Park
Black-headed Gull
Chroicocephalus ridibundus
European Herring Gull
Larus argentatus
Common Gull
Larus canus
Lesser Black-backed Gull
Larus fuscus
Great Black-backed Gull
Larus marinus
Common Tern
Sterna hirundo
Black-legged Kittiwake
Rissa tridactyla
Little Gull
Hydrocoloeus minutus
Mediterranean Gull
Ichthyaetus melanocephalus
Arctic Tern
Sterna paradisaea
Caspian Gull
Larus cachinnans
Little Tern
Sternula albifrons
📅 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 Wadden Sea National Park?
About 11% of visitor-days record a Sandwich Tern sighting in Wadden Sea National Park, based on 1390 observer-days of citizen-science data from GBIF.
When is the best time to see Sandwich Tern in Wadden Sea National Park?
August has the highest sighting rate for Sandwich Tern in Wadden Sea National Park in our monthly data.