Black Skimmer
I believe I saw this very distinctive bird (doing it's very distinctive thing) down on one of the barrier islands off the Delmarva Peninsula—Chincoteague or Assateague perhaps.
The bird's lower mandible is quite a bit longer than the upper; the bird flies close to the water, beak dipping in the water. When it senses a tiny fish or some such prey, it clamps down on its dinner.
Two images by Richard Koenig; taken late 1980s or early 1990s.










