Michael Pitts / Red tailed tropic bird flying, Midway Atoll, Pacific Ocean

Michael Pitts / Red tailed tropic bird with chick, Midway Atoll, Pacific Ocean

Michael Pitts / Red tailed tropic bird adult with chick, Midway Atoll, Pacific Ocean

John Cancalosi / Red tailed tropicbird {Phaethon rubricauda} in flight, Antigua, West Indies

Doug Perrine / Red tailed tropic bird (Phaethon rubricauda rothschildi) in courtship flight, Sand Island, Midway Atoll National Wildlife Refuge, Papahanaumokuakea Marine National Monument, Northwest Hawaiian Islands...

Doug Perrine / Red tailed tropic bird (Phaethon rubricauda rothschildi) in courtship flight, Sand Island, Midway Atoll National Wildlife Refuge, Papahanaumokuakea Marine National Monument, Northwest Hawaiian Islands...

Doug Perrine / Red tailed tropic bird (Phaethon rubricauda rothschildi) in courtship flight, Sand Island, Midway Atoll National Wildlife Refuge, Papahanaumokuakea Marine National Monument, Northwest Hawaiian Islands...

Doug Perrine / Red-tailed tropicbird (Phaethon rubricauda rothschildi) sitting on nest on ground, Sand Island, Midway, Atoll, Midway Atoll National Wildlife Refuge, Papahanaumokuakea Marine National Monument, Northw...

Doug Perrine / Red-tailed tropicbird (Phaethon rubricauda rothschildi) pair in courtship flight, Sand Island, Midway Atoll National Wildlife Refuge, Papahanaumokuakea Marine National Monument, Northwest Hawaiian Isl...

Doug Perrine / Red-tailed tropicbird (Phaethon rubricauda rothschildi) pair in courtship flight, Sand Island, Midway Atoll National Wildlife Refuge, Papahanaumokuakea Marine National Monument, Northwest Hawaiian Isl...

Doug Perrine / Red-tailed tropicbird (Phaethon rubricauda rothschildi) pair in courtship flight, Sand Island, Midway Atoll National Wildlife Refuge, Papahanaumokuakea Marine National Monument, Northwest Hawaiian Isl...

Oriol Alamany / Red-tailed tropicbird (Phaethon rubricauda) in flight, Malabar Hill, Lord Howe island, Lord Howe Island Group UNESCO Natural World Heritage Site, New South Wales, Australia

Oriol Alamany / Red-tailed tropicbird (Phaethon rubricauda) in flight, Malabar Hill, Lord Howe island, Lord Howe Island Group UNESCO Natural World Heritage Site, New South Wales, Australia

Ingo Arndt / Red-tailed Tropicbird (Phaethon rubricauda) in flight, Christmas Island, Indian Ocean, Australian Territory, November

Bernard Castelein / Red-tailed Tropic bird (Phaethon rubricauda) in flight overhead, Nosy Ve, Madagascar

Bernard Castelein / Red-tailed Tropicbird (Phaethon rubricauda) flying portrait, Nosy Ve, Madagascar

Bernard Castelein / Red-tailed Tropicbird (Phaethon rubricauda) flying portrait, Nosy Ve, Madagascar

Bernard Castelein / Red-tailed Tropicbird (Phaethon rubricauda) flying portrait, Nosy Ve, Madagascar

Bernard Castelein / Red-tailed Tropicbird (Phaethon rubricauda) resting on ground, Nosy Ve, Madagascar

Bernard Castelein / Red-tailed Tropicbird (Phaethon rubricauda) resting on ground, Nosy Ve, Madagascar

Bernard Castelein / Red-tailed Tropicbird (Phaethon rubricauda) resting on ground, Nosy Ve, Madagascar

Bernard Castelein / Red-tailed Tropicbird (Phaethon rubricauda) resting on ground and vocalising, Nosy Ve, Madagascar

Bernard Castelein / Red-tailed Tropicbird (Phaethon rubricauda) flying portrait, Nosy Ve, Madagascar

Bernard Castelein / Red-tailed Tropicbird (Phaethon rubricauda) flying portrait, Nosy Ve, Madagascar

Bernard Castelein / Red-tailed Tropicbird (Phaethon rubricauda) flying portrait, Nosy Ve, Madagascar

Bob Steele / Red-tailed Tropicbird (Phaethon rubricauda), Midway Atoll, Hawaii

Mark MacEwen / Red-tailed Tropicbird (Phaethon rubricauda) nesting on Raine Island national park Great Barrier Reef, Australia.

Mike Potts / White-throated hummingbird (Leucochloris albicollis) and female Brazilian ruby (Clytolaema rubricauda) Santa Teresa, Rio de Janeiro, Brazil.

Yukihiro Fukuda / Red tailed tropicbird (Phaethon rubicauda) in flight, Christmas Island, Indian Ocean, July

Yukihiro Fukuda / Red tailed tropicbird (Phaethon rubicauda) in flight, Christmas Island, Indian Ocean, July

Yukihiro Fukuda / Red tailed tropicbird (Phaethon rubicauda) in flight, Christmas Island, Indian Ocean, July

Yukihiro Fukuda / Red tailed tropicbirds (Phaethon rubicauda) three adults in display flight, Christmas Island, Indian Ocean, July

Yukihiro Fukuda / Red tailed tropicbird (Phaethon rubicauda) in flight, Christmas Island, Indian Ocean, July

Yukihiro Fukuda / Red tailed tropicbird (Phaethon rubicauda) parent about to feed large chick in nest, Christmas Island, Indian Ocean, July

Yukihiro Fukuda / Red tailed tropicbird (Phaethon rubicauda) parent returns to feed large chick in nest, Christmas Island, Indian Ocean, July

Yukihiro Fukuda / Red tailed tropicbird (Phaethon rubicauda) protective parent with chick at nest on ground, Christmas Island, Indian Ocean, July

Yukihiro Fukuda / Red tailed tropicbird (Phaethon rubicauda) parent returns to feed large chick in nest, Christmas Island, Indian Ocean, July

Yukihiro Fukuda / Red tailed tropicbird (Phaethon rubicauda) in flight overhead, Christmas Island, Indian Ocean, July

Yukihiro Fukuda / Red tailed tropicbird (Phaethon rubicauda) incubating eggs at nest near beach, Christmas Island, Indian Ocean, July

Yukihiro Fukuda / Red tailed tropicbird (Phaethon rubicauda) portrait of chick in nest, Christmas Island, Indian Ocean, July

Yukihiro Fukuda / Red tailed tropicbird (Phaethon rubicauda) large chick waiting in nest on ground for parents to return with food, Christmas Island, Indian Ocean, July

Yukihiro Fukuda / Red tailed tropicbird (Phaethon rubicauda) incubating eggs at nest near beach, Christmas Island, Indian Ocean, July

Luiz Claudio Marigo / Female Brazilian ruby (Clytolaema rubricauda) perched in Atlantic Rainforest, Serrinha do Alambari Environmental Protection Area, Rio de Janeiro State, Southeastern Brazil.

Luiz Claudio Marigo / Brazilian ruby (Clytolaema rubricauda) male perched in Atlantic Rainforest, Serrinha do Alambari Environmental Protection Area, Rio de Janeiro State, Southeastern Brazil.

Brent Stephenson / Red-tailed Tropicbird (Phaethon rubricauda) calling whilst in flight. Aitutaki, Cook Islands, November.

Brent Stephenson / Red-tailed Tropicbird (Phaethon rubricauda) coming in to land with another flying in the background. Ducie Island, Pitcairn Group, September.

Dave Watts / Red tailed tropic bird {Phaethon rubricauda} juvenile calling on nest, Australia

Michael Pitts / Red tailed tropic bird {Phaethon rubricauda} portrait, Midway Atoll, Pacific

Steven David Miller / Red tailed tropic bird {Phaethon rubricauda} chick at nest, Great Barrier Reef, Australia

Luiz Claudio Marigo / Male Brazilian Ruby (Clytolaema rubricauda) perched, Atlantic Rainforest of Itatiaia National Park, Rio de Janeiro State, Brazil.

Inaki Relanzon / Red-tailed Tropicbird (Phaeton rubricauda) in flight, Nosy Ve, Anakao, South Tulear, South Madagascar, May

Mark Brownlow / Red tailed tropicbird {Phaethon rubricauda} in flight, French Frigate Shoals, Hawaiian islands, Pacific

Sebastian Kennerknecht / Red-tailed Tropicbird (Phaethon rubricauda) flying, Midway Atoll, Hawaiian Leeward Islands, Hawaii

Sebastian Kennerknecht / Red-tailed Tropicbird (Phaethon rubricauda) with chick, Midway Atoll, Hawaiian Leeward Islands, Hawaii

Sebastian Kennerknecht / Red-tailed Tropicbird (Phaethon rubricauda) with chick, Midway Atoll, Hawaiian Leeward Islands, Hawaii

Sebastian Kennerknecht / Red-tailed Tropicbird (Phaethon rubricauda) nesting, Midway Atoll, Hawaiian Leeward Islands, Hawaii

Inaki Relanzon / Red-tailed tropicbird (Phaethon rubricauda) in flight, Nosy Ve, Anakao, South Madagascar

Inaki Relanzon / Red-tailed tropicbird (Phaethon rubricauda) in flight, Nosy Ve, Anakao, South Madagascar

Inaki Relanzon / Red-tailed tropicbird (Phaethon rubricauda) in flight, calling, Nosy Ve, Anakao, South Madagascar

Luiz Claudio Marigo / Brazilian Ruby (Clytolaema rubricauda) in Atlantic Rainforest, Serrinha do Alambari Environmental Protection Area and Serra da Mantiqueira Environmental Protection Area, Rio de Janeiro State, Southeas...

Mitsuaki Iwago / Red-tailed Tropicbird (Phaethon rubricauda) pair courting, Hawaii

Juergen Freund / Red-tailed tropic birds (Phaethon rubricauda) nesting on Bedwell Island. Rowley Shoals, Western Australia. Sunset over ocean

Juergen Freund / Red-tailed tropic birds (Phaethon rubricauda) nesting site on Bedwell Island. Rowley Shoals, Western Australia

Juergen Freund / Red-tailed tropic bird(Phaethon rubricauda) nesting on Bedwell Island. Rowley Shoals, Western Australia

Juergen Freund / Red-tailed tropic birds (Phaethon rubricauda) immature juvenile at nest site on Bedwell Island. Rowley Shoals, Western Australia

Steven David Miller / Red tailed tropicbird {Phaethon rubricauda} flying, Lord Howe Is, New South Wales, Australia

Steven David Miller / Red tailed tropicbird {Phaethon rubricauda} flying, Lord Howe Is, New South Wales, Australia

Steven David Miller / Three Red tailed tropic birds (Phaethon rubricauda) fledglings begging for food in nest, Lady Elliot Island, Australia

Dave Watts / Red tailed tropic bird {Phaethon rubricauda} nesting on ground, Australia.

Tui De Roy / Red-tailed Tropicbird (Phaethon rubricauda) flying, Midway Atoll, Hawaii

Tui De Roy / Red-tailed Tropicbird (Phaethon rubricauda) flying, Midway Atoll, Hawaii

Mitsuaki Iwago / Red-tailed Tropicbird (Phaethon rubricauda) flying, Hawaii

Dave Watts / Red tailed tropic bird in flight {Phaethon rubricauda} Lady Eliot Island, Australia, Great Barrier Reef

Steven David Miller / Red tailed tropic bird & chick at nest {Phaethon rubricauda} Lord Howe Is, NSW, Australia

Steven David Miller / Red tailed tropic bird nesting {Phaethon rubricauda} Lord Howe Is., NSW, Australia

Gary Bell/ Oceanwide / Red-tailed Tropicbird (Phaethon rubricauda) flying, Christmas Island, Australia

Laurent Geslin / Skull and beak of Red-tailed Tropic bird (Phaethon rubricauda)

Julian Hume / Illustration of snakes,lizards and tortoises on Mauritius. Keel-scaled boa (Casarea dussumieri) - threatened/endangered species; burrowing boa (Bolyeria multicarinata) - extinct 1975; Gnther's gecko (...

Maxime Aliaga / Brazilian ruby hummingbird (Clytolaema rubricauda) male, feeding on flower in Atlantic rainforest, Brazil.

Maxime Aliaga / Violet-capped woodnymph (Thalurania glaucopis) and Brazilian ruby (Clytolaema rubricauda) hummingbirds feeding on flower in Atlantic rainforest, Brazil. Composite image.

Maxime Aliaga / Violet-capped woodnymph (Thalurania glaucopis) and Brazilian ruby (Clytolaema rubricauda) hummingbirds feeding on flower in Atlantic rainforest, Brazil. Composite image.

Maxime Aliaga / Brazilian ruby hummingbird (Clytolaema rubricauda) male, feeding on flower in Atlantic rainforest, Brazil.

David Fleetham / Yellowtail filefish (Pervagor aspricaudus) swimming through coral reef, Hawaii, Pacific Ocean.

Roland Seitre / Red-tailed tropic bird (Phaethon rubricauda) in flight, Kilauea Point National Wildlife Refuge, Kauai, Hawaii.

Roland Seitre / Red-tailed tropic bird (Phaethon rubricauda) in flight, Kilauea Point National Wildlife Refuge, Kauai, Hawaii.

Bruce Thomson / Red-tailed tropicbird (Phaethon rubricauda) sitting on eggs in nest, Norfolk Island, Australia.

Bruce Thomson / Red-tailed tropicbird (Phaethon rubricauda) soaring above the ocean, Christmas Island, Australia.

Bert Willaert / Sugarloaf Rock viewed fom coast of Leeuwin-Naturaliste National Park. The granite outcrop is the southernmost regular breeding site of the Red-tailed tropicbird (Phaethon rubricauda). Western Australi...

Bert Willaert / Sugarloaf Rock viewed fom coast of Leeuwin-Naturaliste National Park. The granite outcrop is the southernmost regular breeding site of the Red-tailed tropicbird (Phaethon rubricauda). Western Australi...

Bert Willaert / Sugarloaf Rock viewed fom coast of Leeuwin-Naturaliste National Park. The granite outcrop is the southernmost regular breeding site of the Red-tailed tropicbird (Phaethon rubricauda). Western Australi...