South American Tern

South American Tern - Sterna hirundinacea


Ushuaia, Argentina:  2014:  November.
Isla Marta, Strait of Magellan, Chile, December 2016.


There was a flock on an old boat in Ushuaia harbour, and a colony on an island in the Beagle Channel.

They have a forked tail with short steamers and are a large tern.

Like many terns they seem to take off for no reason!

Their red bill and legs make them striking in breeding plumage.

The upper bird in flight is a young bird as its bill is black and it has a white forehead.   A non-breeding adult would have a red bill apparently.

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