A very small tern only 25cms
long generally found in or near inland water in Europe and North America.
As its name suggests, it has predominantly dark plumage. Their breeding
habitat is freshwater marshes across most of Canada, the northern United
States and much of Europe and western Asia. They usually nest either
on floating material in a marsh or on the ground very close to water,
laying 2-4 eggs. Unlike the "white" Sterna
terns, these birds do not dive for fish, but forage on the wing picking
up items at or near the water's surface or catching insects in flight.
They mainly eat insects and fish. The North American race, C. n. surinamensis,
is distinguishable from the European form in all plumages, and is considered
by some to be a separate species. In flight, the build
appears slim. The wing-beats are full and dynamic. The bird in the photos
below is a juvenile that turned up as a rare migrant at Pennington Flash
August 2007
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