Black Tern
Chlidonias niger
- KingdomAnimalia (Animals)
- PhylumChordata (Cordats)
- ClassAves (Aus)
- OrderCharadriiformes (Caradriformes)
- FamilyLaridae (Gulls, Terns, and Skimmers)
- GenusChlidonias (Marsh Terns)
- SpeciesChlidonias niger (Black Tern)
Closest Relatives at Glacier National Park
Ring-billed Gull
Larus delawarensis
California Gull
Larus californicus
American Herring Gull
Larus smithsonianus
Bonaparte's Gull
Chroicocephalus philadelphia
Iceland Gull
Larus glaucoides
Caspian Tern
Hydroprogne caspia
Short-billed Gull
Larus brachyrhynchus
Larus pipixcan
Leucophaeus pipixcan
Lesser Black-backed Gull
Larus fuscus
Forster's Tern
Sterna forsteri
Glaucous Gull
Larus hyperboreus
Spotted Sandpiper
Actitis macularius
📅 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 Black Tern in Glacier National Park?
About 0% of visitor-days record a Black Tern sighting in Glacier National Park, based on 20 observer-days of citizen-science data from GBIF.
When is the best time to see Black Tern in Glacier National Park?
June has the highest sighting rate for Black Tern in Glacier National Park in our monthly data.