Caspian tern nest and three eggs.

A black tern nest with three eggs.

A black tern nest with three eggs.

A black tern nest with three eggs. Image note: large.

A young black tern swallowing a fish.

A young black tern on its nest. Image note: side view.

Two young black terns in a nest, one eating a minnow.

Herman T. Bohlman and William L. Finley photographing a tern’s nest among the tules.

Three young black terns on a nest. Image note: front view.

Three Caspian terns at nest. One with fish and one with mouth open. Image note: good.