I have photographed a few Royal Terns (Thalasseus maximus) in North Carolina. The first two photos show the tern as the breeding plumage is ending, and in the third photo, the tern is in nonbreeding plumage.
Royal Tern, Pea Island Wildlife Refuge, Hatteras Island, North Carolina, USA, June 28, 2008
Royal Tern, Pea Island Wildlife Refuge, Hatteras Island, North Carolina, USA, June 28, 2008
Royal Tern, Ocracoke Island, North Carolina, USA, November 24, 2009