Forster's Tern
Sterna forsteri
- KingdomAnimalia (Animals)
- PhylumChordata (Cordats)
- ClassAves (Aus)
- OrderCharadriiformes (Caradriformes)
- FamilyLaridae (Gulls, Terns, and Skimmers)
- GenusSterna (Typical Terns)
- SpeciesSterna forsteri (Forster's Tern)
Closest Relatives at Grand Teton National Park
Common Tern
Sterna hirundo
Ring-billed Gull
Larus delawarensis
California Gull
Larus californicus
Larus pipixcan
Leucophaeus pipixcan
Caspian Tern
Hydroprogne caspia
Sabine's Gull
Xema sabini
Bonaparte's Gull
Chroicocephalus philadelphia
American Herring Gull
Larus smithsonianus
Spotted Sandpiper
Actitis macularius
Killdeer
Charadrius vociferus
Wilson's Snipe
Gallinago delicata
Long-billed Curlew
Numenius americanus
📅 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 Forster's Tern in Grand Teton National Park?
About 0% of visitor-days record a Forster's Tern sighting in Grand Teton National Park, based on 6 observer-days of citizen-science data from GBIF.
When is the best time to see Forster's Tern in Grand Teton National Park?
May has the highest sighting rate for Forster's Tern in Grand Teton National Park in our monthly data.