Caspian tern

During migration they are usually silent, and they do not often remain long in one locality.

The much larger Caspian Tern, Hydropronia caspia imperator, is similar in color pattern to the common tern but has a much heavier red bill and a short though forked tail.

This species, which is decidedly rare as a migrant in the interior, has established a small nesting colony near Erie.

The Caspian Tern is 21 inches long.

Black Tern, Clidonius nigra surinamensis, Jimlin.

Other name, Marsh Tern.