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
Whiskered tern like winter adults. The first winter plumage is intermediate between juvenile and adult winter, with patchy ginger on the back. The whiskered tern eats small fish, amphibians, insects and crustaceans. Whiskered tern The whiskered tern ("Chlidonias hybrida") is a tern in the family Laridae. The genus name is from Ancient Greek "khelidonios", "swallow-like", from "khelidon", "swallow". The specific "hybridus" is Latin for "hybrid"; Pallas thought it might be a hybrid of white-winged black tern and common tern, writing ""Sterna fissipes ["Chlidonias leucopterus"] et Hirundine ["Sterna hirundo"] natam"”. This bird has a number of geographical races, differing mainly in size and