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 →
<5% of wildlife watchers report a Common Tern sighting in Galápagos Islands, based on 14 days of visitor records from GBIF citizen-science data.
Closest Relatives at Galápagos Islands
Arctic Tern
Sterna paradisaea
Brown Noddy
Anous stolidus
Lava Gull
Leucophaeus fuliginosus
Swallow-tailed Gull
Creagrus furcatus
Franklin's Gull
Leucophaeus pipixcan
Laughing Gull
Leucophaeus atricilla
Black Skimmer
Rynchops niger
Royal Tern
Thalasseus maximus
Dominican Gull
Larus dominicanus
Sooty Tern
Onychoprion fuscatus
Grey Gull
Leucophaeus modestus
Elegant Tern
Thalasseus elegans
📅 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 Galápagos Islands?
About 0% of wildlife watchers report a Common Tern sighting in Galápagos Islands, based on 14 days of visitor records from GBIF citizen-science data.
When is the best time to see Common Tern in Galápagos Islands?
September has the highest sighting rate for Common Tern in Galápagos Islands in our monthly data.