1.
In the United States, I am primarily found near the Atlantic and Gulf Coasts.

2.
An adult in breeding plumage exhibits red and black spots on the bill, a red orbital eye ring, and yellow-green legs.

3.
I can be found breeding in South Dakota and surrounding states.

4.
Among other differences, my broad white eye-arcs distinguish me from another similar species that commonly migrates through the state.

7.
Larus delawarensis, I am the 2nd smallest gull on the list below.

8.
My bill is more stout than other terns.  Like most, I have a black cap in full breeding plumage.

9.
I have never been seen in South Dakota.

10.
Sterna maxima, I am a large tern normally found in coastal areas.

11.
The triangle of white on my outer primaries distinguishes me from another similar gull in South Dakota

12.
I'm a pelagic gull except when on my Arctic breeding grounds.

13.
I am Rissa tridactyla, a relative small pelagic gull which breeds on rocky island and shoreline cliffs.

14.
My tiny, short legs, thin red bill, and range distinguish me from some of my most similar relatives.

15.
My translucent silvery-white primaries, and tail extending beyond my wingtips at rest differentiate me from a similar species.

16.
I am one of the most widespread gulls in North America, and can be found in each of the lower 48 states, Alaska, and Canada.

17.
I am only found on the West Coast and rarely inland, breeding from Washington up through Alaska.

18.
I have an extremely limited range in the United States, normally only found in a few locations in Alaska.

19.
My photo was taken in South Dakota, the only one of the following species to have been seen in the state.

20.
Sterna antillarum, I breed both inland and along the coasts in the United States.