Common Tern
Sterna hirundo
Conservation Status
Least ConcernAves · Charadriiformes · Laridae
About
The common tern 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.
Fun Fact
Common Terns will dive-bomb and defecate on any intruder near their nests, creating a powerful deterrent—including humans weighing over 100 kg.
Quick Facts
Habitat
Found in the states bordering the Great Lakes, and locally on the Gulf coast.
Diet
Eat small chicks.
Lifespan
23 years (wild)
Threats
- Habitat Change
- Human Disturbance