Red-tailed tropicbird (Phaethon rubricauda), Kilauea Point National Wildlife Refuge, Kauai, Hawaii, United States of America, Pacific

Adult red-billed tropicbird (Phaethon aethereus), Isla San Pedro Martir, Gulf of California (Sea of Cortez), Baja California, Mexico, North America

Adult red-billed tropicbird (Phaethon aethereus), Isla San Pedro Martir, Gulf of California (Sea of Cortez), Baja California, Mexico, North America

Adult red-billed tropicbird (Phaethon aethereus), Isla San Pedro Martir, Gulf of California (Sea of Cortez), Baja California, Mexico, North America

Adult red-billed tropicbird (Phaethon aethereus), Isla San Pedro Martir, Gulf of California (Sea of Cortez), Baja California, Mexico, North America

Red-billed tropicbird (Phaethon aethereus), Punta Pitt, San Cristobal Island, Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Adult red-billed tropicbird (Phaethon aethereus), Isla San Pedro Martir, Gulf of California (Sea of Cortez), Baja California, Mexico, North America

Golden Bosun, Phaethon lepturus fulvus, Christmas Island, Australia

White-tailed tropicbird (Phaethon lepturus), Fregate Island, Seychelles, Indian Ocean, Africa

Adult red-billed tropicbird (Phaethon aethereus) in flight in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America

White Tailed Tropicbird (Phaethon lepturus), a seabird known as the Longtail, found in the Pacific, Atlantic and Indian Oceans, Bermda, North Atlantic, North America

Adult red-billed tropicbird (Phaethon aethereus) in flight at nest site on Isla San Pedro Martir, Baja California, Mexico, North America

White-tailed tropicbird (Phaethon lepturus), Fregate Island, Seychelles, Indian Ocean, Africa

Adult red-billed tropicbird (Phaethon aethereus), in flight near nest at Isla San Pedro Martir, Baja California, Mexico, North America

Adult red-billed tropicbird (Phaethon aethereus) in flight in the Galapagos Island Archipelago, Ecuador

Three Red-billed Tropicbird (Phaethon aethereus) in flight during mating season over Isla San Pedro Martir in the Gulf of California (Sea of Cortez), Mexico.

Red-billed Tropicbird (Phaethon aethereus) in flight over Isla San Pedro Martir in the Gulf of California (Sea of Cortez), Mexico. (rr)

Red-billed Tropicbird (Phaethon aethereus) pair in flight over Isla San Pedro Martir in the Gulf of California (Sea of Cortez), Mexico.

White-tailed Tropicbird (Phaethon lepturus), Island of Mahe, Seychelles, Africa, Indian Ocean

White-tailed Tropicbird (Phaethon lepturus), island of Mahe, Seychelles, Africa, Indian Ocean

White-tailed Tropicbird (Phaethon lepturus), island of Mahe, Seychelles, Africa, Indian Ocean

Flying White-tailed tropicbird (Phaethon lepturus) Reunion, overseas department and region of the French Republic and an Indian Ocean island in East Africa