Royal Tern
Thalasseus maximus
- KingdomAnimalia (Animals)
- PhylumChordata (Cordats)
- ClassAves (Aus)
- OrderCharadriiformes (Caradriformes)
- FamilyLaridae (Gulls, Terns, and Skimmers)
- GenusThalasseus (Crested Terns)
- SpeciesThalasseus maximus (Royal Tern)
Closest Relatives at Galápagos Islands
Elegant Tern
Thalasseus elegans
Brown Noddy
Anous stolidus
Lava Gull
Leucophaeus fuliginosus
Swallow-tailed Gull
Creagrus furcatus
Larus pipixcan
Leucophaeus pipixcan
Laughing Gull
Leucophaeus atricilla
Black Skimmer
Rynchops niger
Dominican Gull
Larus dominicanus
Sooty Tern
Onychoprion fuscatus
Grey Gull
Leucophaeus modestus
Arctic Tern
Sterna paradisaea
Common Tern
Sterna hirundo
📅 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 Royal Tern in Galápagos Islands?
About 2% of visitor-days record a Royal Tern sighting in Galápagos Islands, based on 117 observer-days of citizen-science data from GBIF.
When is the best time to see Royal Tern in Galápagos Islands?
October has the highest sighting rate for Royal Tern in Galápagos Islands in our monthly data.