Tern make up the clutch. Most species feed on fish caught by diving from flight, but the marsh terns are insect-eaters, and some large terns will supplement their diet with small land vertebrates. Many terns are long-distance migrants, and the Arctic tern may see more daylight in a year than any other animal. Terns are long-lived birds and are relatively free from natural predators and parasites; most species are declining in numbers due directly or indirectly to human activities, including habitat loss, pollution, disturbance, and predation by introduced mammals. The Chinese crested tern is in a critical situation and three other
Royal tern Royal tern The royal tern ("Thalasseus maximus") is a tern in the family Laridae. The genus name is from Ancient Greek "Thalasseus", "fisherman", from "thalassa", "sea". The specific "maximus" is Latin for '"greatest". This bird has two distinctive subspecies: "T. m. maximus" which lives on the Atlantic and Pacific coasts of the North and South America, and the slightly smaller "T. m. albididorsalis" lives on the coast of West Africa. The royal tern has a red-orange bill and a black cap during the breeding season, but in the winter the cap becomes patchy. The royal tern is found in Europe,