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 Elk Island National Park
Larus pipixcan
Leucophaeus pipixcan
Ring-billed Gull
Larus delawarensis
Bonaparte's Gull
Chroicocephalus philadelphia
Forster's Tern
Sterna forsteri
California Gull
Larus californicus
Common Tern
Sterna hirundo
American Herring Gull
Larus smithsonianus
Wilson's Snipe
Gallinago delicata
Spotted Sandpiper
Actitis macularius
Greater Yellowlegs
Tringa melanoleuca
Solitary Sandpiper
Tringa solitaria
Lesser Yellowlegs
Tringa flavipes
📅 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 Elk Island National Park?
About 20% of visitor-days record a Black Tern sighting in Elk Island National Park, based on 108 observer-days of citizen-science data from GBIF.
When is the best time to see Black Tern in Elk Island National Park?
June has the highest sighting rate for Black Tern in Elk Island National Park in our monthly data.