Common Tern
Sterna hirundo
- KingdomAnimalia (Animals)
- PhylumChordata (Cordats)
- ClassAves (Aus)
- OrderCharadriiformes (Caradriformes)
- FamilyLaridae (Gulls, Terns, and Skimmers)
- GenusSterna (Typical Terns)
- SpeciesSterna hirundo (Common Tern)
The common tern (Sterna hirundo) is a seabird in the family Laridae. This bird has a circumpolar distribution, its four subspecies breeding in temperate and subarctic regions of Europe, Asia and North America. It is strongly migratory, wintering in coastal tropical and subtropical regions. Breeding adults have light grey upperparts, white to very light grey underparts, a black cap, orange-red legs, and a narrow pointed bill. Depending on the subspecies, the bill may be mostly red with a black tip or all black. There are several similar species, including the partly sympatric Arctic tern, which can be separated on plumage details, leg and bill colour, or vocalisations. Wikipedia →
10–20% of wildlife watchers report a Common Tern sighting in Białowieża National Park, based on 136 days of visitor records from GBIF citizen-science data.
Closest Relatives at Białowieża National Park
Black-headed Gull
Chroicocephalus ridibundus
Whiskered Tern
Chlidonias hybrida
Black Tern
Chlidonias niger
Caspian Gull
Larus cachinnans
White-winged Tern
Chlidonias leucopterus
Common Gull
Larus canus
Little Gull
Hydrocoloeus minutus
Caspian Tern
Hydroprogne caspia
Lesser Black-backed Gull
Larus fuscus
Little Tern
Sternula albifrons
European Herring Gull
Larus argentatus
Mediterranean Gull
Ichthyaetus melanocephalus
📅 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 Common Tern in Białowieża National Park?
About 17% of wildlife watchers report a Common Tern sighting in Białowieża National Park, based on 136 days of visitor records from GBIF citizen-science data.
When is the best time to see Common Tern in Białowieża National Park?
August has the highest sighting rate for Common Tern in Białowieża National Park in our monthly data.