Terns are seabirds with worldwide distribution. There are over 40 species of Tern in the world, and many have a similar look. This design features nine different Terns that live across the United States and Europe. They are: Caspian; Royal; Sooty; Black; Gull-billed; Whiskered; Common; White-winged and Sandwich. Learn the difference between them with our Birdorable design - Know Your Terns! Great gifts here for birders and Tern fans.