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Juvenile Forster's Terns are similar to the winter adult.
There are Caspian, sandwich, black, royal, common, least and Forster's terns here.
The Forster's Tern feeds by plunge-diving for fish, but will also hawk for insects in its breeding marshes.
On islands in North Carolina, rice rats consume eggs of Forster's tern (Sterna forsteri).
American Crows, Black-billed Magpies and Forster's Tern can sometime take eggs.
In winter, the cap is lost, and there is a dark patch through the eye like a Forster's Tern or a Mediterranean Gull.
The Forster's Tern (Sterna forsteri) is a member of the tern family Sternidae.
The marsh terns, Trudeau's Tern and some Forster's Terns nest in inland marshes.
Marsh rice rat, Oryzomys palustris, predation on Forster's tern, Sterna forsteri, eggs in coastal North Carolina.
There are also Caspian Terns, Forster's Terns, Marbled Godwit, and Spotted Sandpipers in the fall.
Regionally threatened or uncommon species include Henslow's sparrows, American white pelicans, Forster's terns, Franklin's gulls, horned grebes, and trumpeter swans.
Black terns, Forster's Terns, American avocet, White-faced Ibis, Clark's grebes, and Black-necked stilts are common during the summer months.
This bird could be confused with the Royal Tern or Forster's Tern, but the elegans is larger and thicker-billed and shows more white on the forehead in winter.
It has hosted three terns which had their first occurrences for Scotland here; namely Forster's Tern, Lesser Crested Tern and Royal Tern.
Someone picked out the sooty body of a black tern - a bird visiting from the Midwest; another distinguished the beak and eye mask identify a Forster's tern that had wandered up from the south.
Most species have little or no nest, laying the eggs onto bare ground, but Trudeau's Tern, Forster's Tern and the marsh terns construct floating nests from the vegetation in their wetland habitats.
The Aspen Parkland with its many sloughs and saline lakes provides breeding grounds for ducks and other waterfowl, black Tern (Chlidonias niger), Forster's tern (Sterna forsteri), American white pelican.
It is both the only breeding site of the Forster's Tern and the only site with Leopard frogs in the province, as well as one of the few Canadian habitats for the Coeur D'Alene Salamander.
Sandhill cranes, Great egrets, Snowy egrets, Black-crowned night herons, White-faced Ibis, Double-crested cormorants, Caspian terns, American white pelicans, and Forster's terns also nest in the Summer Lake wetlands.
In North America, the Forster's Tern in breeding plumage is obviously larger than the Common, with relatively short wings, a heavy head and thick bill, and long, strong legs; in all non-breeding plumages, its white head and dark eye patch make the American species unmistakable.
A few species are defying the trend and showing local increases, including the Arctic Tern in Scandinavia, Forster's tern around the Great Lakes, the Sandwich Tern in eastern North America and its yellow-billed subspecies, the Cayenne Tern, in the Caribbean.