South American Tern
NameSouth American Tern
Common NameSouth American Tern
Scientific NameSterna hirundinacea
FamilyLaridae
Wingspan (cm)77.5
Length (cm)39
Weight (g)185
Plumage DetailsAdults in breeding plumage have a solid black cap extending to the nape, white cheeks and underparts, and pale grey upperparts (mantle and wings). The primary flight feathers are darker grey, and the tail is deeply forked. The bill is bright red, often with a black tip, and the legs and feet are red.
Vocalization / CallVocalizations include harsh, grating calls, often described as 'krrr-krrr' or 'kee-yah', used during territorial disputes or as alarm calls.
Primary Dietpiscivore
Primary Habitatscoastal, wetland
Conservation Statusleast-concern
Geographic RangeBreeds along the coasts of South America, from southern Brazil south to Tierra del Fuego, and on the Falkland Islands. It winters along the coasts of South America, with some populations moving north.
Identifying Featuresblack cap, red bill (often with black tip), red legs, pale grey upperparts, white underparts, deeply forked tail
Description
A medium-sized tern, this species is characterized by its sleek, agile flight and habit of plunge-diving for fish. It typically breeds in colonies along the coasts of South America and is often seen resting on coastal structures.
