Tern sea terns have light grey or white body plumage as adults, with a black cap to the head. The legs and bill are various combinations of red, orange, yellow, or black depending on species. The pale plumage is conspicuous from a distance at sea, and may attract other birds to a good feeding area for these fish-eating species. When seen against the sky, the white underparts also help to hide the hunting bird from its intended prey. The Inca tern has mainly dark plumage, and three species that mainly eat insects, the black tern, white-winged tern, and black-bellied tern, have
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