Forsters tern

Sterna forsteri

The Forster's tern is a member of the tern family, Sternidae. It breeds inland in North America and winters south to the Caribbean and northern South America. This species is rare but annual in western Europe, and has wintered in Ireland and Great Britain on a number of occasions. No European tern winters so far north.
Forster's tern  Forsters tern,Geotagged,Spring,Sterna forsteri,United States

Appearance

This is a small tern, 33–36 cm long with a 64–70 cm wingspan. It is most similar to the common tern. It has pale grey upperparts and white underparts. Its legs are red and its bill is red, tipped with black. In winter, the forehead becomes white and a characteristic black eye mask remains. Juvenile Forster's terns are similar to the winter adult. The call is a harsh noise like a black-headed gull.

This species is unlikely to be confused with the common tern in winter because of the black eye mask, but is much more similar in breeding plumage. Forster's has a grey centre to its white tail, and the upperwings are pure white, without the darker primary wedge of the common tern.
Forster's Tern, fishing I kept hearing these splashes in the water, but at first only while my back was turned.  I thought it was big fish jumping out the water or something.  Finally I saw these birds flying along the shoreline, and they would dive down to catch a fish. Common Tern,Forsters tern,Geotagged,Sterna forsteri,Sterna hirundo,United States,Winter

Naming

This bird is named after the naturalist Johann Reinhold Forster.
Forster's tern (Sterna forsteri) Rio Lagartos, Yucatan, Mexico. Jul 12, 2017 Forsters tern,Geotagged,Mexico,Sterna forsteri,Summer

Reproduction

This species breeds in colonies in marshes. It nests in a ground scrape and lays three or more eggs. Like all white terns, it is fiercely defensive of its nest and young.

Food

The Forster's tern feeds by plunge-diving for fish, but will also hawk for insects in its breeding marshes. It usually feeds from saline environments in winter, like most "Sterna" terns. It usually dives directly, and not from the "stepped-hover" favoured by the Arctic tern. The offering of fish by the male to the female is part of the courtship display.

References:

Some text fragments are auto parsed from Wikipedia.

Status: Least concern
EX EW CR EN VU NT LC
Taxonomy
KingdomAnimalia
DivisionChordata
ClassAves
OrderCharadriiformes
FamilySternidae
GenusSterna
SpeciesS. forsteri