An adult Forster's tern at its nest, showing three eggs.

A Forster's tern nest and three eggs on muskrat house.

Forster's tern nest and three eggs. One black tern egg is also in the nest.

Nest of a Forster's tern on a floating gate.

Grebes and terns along the shore of Clear Lake, California.

Royal terns in flight and on the shore with eggs visible on the sand in the foreground at a colony near Aransas Pass.

A royal tern chick in the sand.

A close view of royal tern eggs in the sand.

A close view of two royal tern eggs and one newly hatched chick in the sand.

Irene Finley with a camera on a tripod photographing a royal tern colony.