Gull-billed Tern
Gelochelidon nilotica
- KingdomAnimalia (Animals)
- PhylumChordata (Cordats)
- ClassAves (Aus)
- OrderCharadriiformes (Caradriformes)
- FamilyLaridae (Gulls, Terns, and Skimmers)
- GenusGelochelidon (Gull-billed Terns)
- SpeciesGelochelidon nilotica (Gull-billed Tern)
Closest Relatives at Yala National Park
Whiskered Tern
Chlidonias hybrida
Little Tern
Sternula albifrons
White-winged Tern
Chlidonias leucopterus
Caspian Tern
Hydroprogne caspia
Brown Noddy
Anous stolidus
Crested Tern
Thalasseus bergii
Common Tern
Sterna hirundo
Lesser Crested Tern
Thalasseus bengalensis
Bridled Tern
Onychoprion anaethetus
Brown-headed Gull
Chroicocephalus brunnicephalus
Lesser Noddy
Anous tenuirostris
Sandwich Tern
Thalasseus sandvicensis
📅 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 Gull-billed Tern in Yala National Park?
About 25% of visitor-days record a Gull-billed Tern sighting in Yala National Park, based on 264 observer-days of citizen-science data from GBIF.
When is the best time to see Gull-billed Tern in Yala National Park?
November has the highest sighting rate for Gull-billed Tern in Yala National Park in our monthly data.