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 Ciénaga de Zapata
Royal Tern
Thalasseus maximus
Caspian Tern
Hydroprogne caspia
Laughing Gull
Leucophaeus atricilla
Black Skimmer
Rynchops niger
Forster's Tern
Sterna forsteri
Ring-billed Gull
Larus delawarensis
Common Tern
Sterna hirundo
Sandwich Tern
Thalasseus sandvicensis
American Herring Gull
Larus smithsonianus
Least Tern
Sternula antillarum
Bonaparte's Gull
Chroicocephalus philadelphia
Black Tern
Chlidonias niger
📅 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 Ciénaga de Zapata?
About 12% of visitor-days record a Gull-billed Tern sighting in Ciénaga de Zapata, based on 190 observer-days of citizen-science data from GBIF.
When is the best time to see Gull-billed Tern in Ciénaga de Zapata?
February has the highest sighting rate for Gull-billed Tern in Ciénaga de Zapata in our monthly data.