Tui De Roy / Hood island giant tortoise (Chelonoidis nigra hoodensis) captive bred young are branded in preparation for release back onto their island of origin, Tortoise breeding centre, Puerto, Isabela Island, N...

Tui De Roy / Hood island giant tortoise (Chelonoidis nigra hoodensis), captive bred young are measured in preparation for release back onto their island of origin, Tortoise breeding centre, Puerto, Isabela Island,...

Tui De Roy / Waved albatross (Phoebastria irrorata) in flight. Punta Cevallos, Espanola (Hood) Island, Galapagos Islands, Ecuador, May.

Tui De Roy / Waved albatross (Phoebastria irrorata) trying to move its egg from between two rock. Punta Cevallos, Espanola (Hood) Island, Galapagos Islands, Ecuador, May.

Tui De Roy / Waved albatross (Phoebastria irrorata) in flight. Punta Cevallos, Espanola (Hood) Island, Galapagos, Ecuador, May.

Tui De Roy / Waved albatross (Phoebastria irrorata) in flight over waves. Punta Cevallos, Espanola (Hood) Island, Galapagos, Ecuador, May.

Tui De Roy / Waved albatross (Phoebastria irrorata) in flight against blue sky. Punta Cevallos, Espanola (Hood) Island, Galapagos Islands, Ecuador, June.

Tui De Roy / Waved albatross (Phoebastria irrorata) courting pair rubbing beaks in a bonding behaviour. Punta Cevallos, Espanola (Hood) Island, Galapagos Islands, Ecuador, May.

Tui De Roy / Waved albatross (Phoebastria irrorata), Swallow-tailed gulls (Creagrus furcatus) and Nazca boobies (Sula granti) nesting as a mixed colony. Punta Cevallos, Espanola (Hood) Island, Galapagos Islands, E...

Tui De Roy / Hood island giant tortoise (Chelonoidis nigra hoodensis) "Diego", old male returned to Galapagos from the San Diego Zoo in 1977 for captive breeding program, Tortoise Breeding Centre, Puerto Ayora, Sa...

Tui De Roy / Hood island giant tortoise (Chelonoidis nigra hoodensis) used for breeding program since 1960s, Tortoise Breeding Centre, Puerto Ayora, Santa Cruz Island, Galapagos Islands, Ecuador, Critically endang...

Tui De Roy / Hood island giant tortoise (Chelonoidis nigra hoodensis) feed, old male 'Diego' returned to Galapagos from the San Diego Zoo in 1977 for captive breeding program, Tortoise Breeding Centre, Puerto Ayor...

Tui De Roy / Waved albatross (Phoebastria irrorata) incubating egg with specialised ventral plumage. Punta Cevallos, Espanola (Hood) Island, Galapagos, Ecuador, May.

Tui De Roy / Green warbler finch (Certhidea olivacea) foraging for seeds, Gardner Bay, EspanÞola (Hood) Island, Galapagos Islands, Ecuador, June.

Tui De Roy / Waved albatross (Phoebastria irrorata) performing bonding beak-rubbing greeting. Punta Cevallos, Espanola (Hood) Island, Galapagos, Ecuador, May.

Tui De Roy / Waved albatross (Phoebastria irrorata) courting pair. Punta Cevallos, Espanola (Hood) Island, Galapagos, Ecuador, May.

Tui De Roy / Waved albatross (Phoebastria irrorata) performing display, courting partner with colony in background. Punta Cevallos, Espanola (Hood) Island, Galapagos, Ecuador, May. Sequence 1 of 3.

Tui De Roy / Waved albatross (Phoebastria irrorata) nesting colony near coastline. Punta Cevallos, Espanola (Hood) Island, Galapagos, Ecuador, May.

Tui De Roy / Waved albatross (Phoebastria irrorata), detail of back feathers and grey flight feathers. Punta Cevallos, Espanola (Hood) Island, Galapagos, Ecuador, May.

Tui De Roy / Waved albatross (Phoebastria irrorata) courting pair mutually grooming. Punta Cevallos, Espanola (Hood) Island, Galapagos, Ecuador, May.

Tui De Roy / Waved albatross (Phoebastria irrorata) performing skypointing display. Punta Cevallos, Espanola (Hood) Island, Galapagos, Ecuador, May.

Tui De Roy / Waved albatross (Phoebastria irrorata) performing beak snapping display. Punta Cevallos, Espanola (Hood) Island, Galapagos, Ecuador, May.

Tui De Roy / Waved albatross (Phoebastria irrorata) courting pair mutually grooming, a bonding behaviour. Punta Cevallos, Espanola (Hood) Island, Galapagos, Ecuador, May.

Tui De Roy / Waved albatross (Phoebastria irrorata) nesting colony on rocky beach between scrub and shore. Punta Cevallos, Espanola (Hood) Island, Galapagos, Ecuador, May.

Tui De Roy / Waved albatross (Phoebastria irrorata) nesting colony on rocky beach between scrub and shore. Punta Cevallos, Espanola (Hood) Island, Galapagos, Ecuador, May.

Tui De Roy / Waved albatross (Phoebastria irrorata) performing display, courting partner with colony in background. Punta Cevallos, Espanola (Hood) Island, Galapagos, Ecuador, May. Sequence 3 of 3.

Tui De Roy / Waved albatross (Phoebastria irrorata) performing display, courting partner with colony in background. Punta Cevallos, Espanola (Hood) Island, Galapagos, Ecuador, May. Sequence 2 of 3.

Tui De Roy / Galapagos dove (Zenaida galapagoensis) on ground Espanola (Hood) Island

Tui De Roy / Hood island giant tortoise (Chelonoidis nigra hoodensis) adult female, part of 12 survivors used in captive breeding program since the 1960s, Tortoise breeding centre, Puerto, Isabela Island, November...

Tui De Roy / Hood island giant tortoise (Chelonoidis nigra hoodensis) adult female, part of 12 survivors used in captive breeding program since the 1960s, Tortoise breeding centre, Puerto, Isabela Island, November...

Tui De Roy / Hood island giant tortoise (Chelonoidis nigra hoodensis) captive bred hatchlings emarging from the egg, Tortoise breeding centre, Puerto, Isabela Island, November 2008

Tui De Roy / Hood island giant tortoise (Chelonoidis nigra hoodensis) captive bred young awaitng release back onto their island of origin, Santa Cruz Island, Galapagos, Ecuador, November 2008

Tui De Roy / Espanola /Hood mockingbird (Mimus macdonaldi) feeding on Cordia lutea berry, Espanola Island, Galapagos

Tui De Roy / Espanola / Hood mockingbird, digging around beach plat roots to find insects, Espanola Island, Galapagos

Tui De Roy / Espanola / Hood mockingbird (Mimus macdonaldi) young 'helpers' being submissive to older bird, Espanola Island, Galapagos

Billy Black / Ted Hood 51 "Footloose" cruising in Narragansett Bay, Rhode Island, USA.

Norbert Wu / Lion Nudibranch (Melibe leonina) with hood extended as it feeds in the ocean current, Vancouver Island, British Columbia, Canada

Bryan and Cherry Alexander / Inuit children dressed in reindeer skin clothing. Baffin Island, Nunavut, Canada, 1987. Editorial use only.

Pete Oxford / Saddleback Galapagos Tortoise (Chelonoidis nigra hoodensis), Wolf Volcano, Isabella Island, Galapagos Islands, Ecuador

Pete Oxford / Saddleback Galapagos Tortoise (Chelonoidis nigra hoodensis) retracted in shell, base of Sierra Negra, Isabella Island, Galapagos Islands, Ecuador

Pete Oxford / Saddleback Galapagos Tortoise (Chelonoidis nigra hoodensis) resting in the depression of shell, Wolf Volcano, Isabella Island, Galapagos Islands, Ecuador

Pete Oxford / Saddleback Galapagos Tortoise (Chelonoidis nigra hoodensis) young, Wolf Volcano, Isabella Island, Galapagos Islands, Ecuador

Pete Oxford / Saddleback Galapagos Tortoise (Chelonoidis nigra hoodensis) foot, Wolf Volcano, Isabella Island, Galapagos Islands, Ecuador

Pete Oxford / Saddleback Galapagos Tortoise (Chelonoidis nigra hoodensis) male, Wolf Volcano, Isabella Island, Galapagos Islands, Ecuador

Pete Oxford / Lava Lizard (Microlophus / Tropidurus delanonis) female, Puenta Suarez, Espanola Island, Galapagos Islands

Pete Oxford / Galapagos sealions (Zalophus wollebaeki) and tourist on beach, Gardner Bay, Espanola / Hood Island, Galapagos Islands, May 2008

Pete Oxford / Galapagos Sea Lion (Zalophus wollebaeki) being photographed by tourist, Gardner Bay, Espanola Island, Galapagos Islands, Ecuador

Pete Oxford / Galapagos Sea Lion (Zalophus wollebaeki) group and tourists, Gardner Bay, Espanola Island, Galapagos Islands, Ecuador

Pete Oxford / Galapagos Sea Lion (Zalophus wollebaeki) group on beach, Gardner Bay, Espanola Island, Galapagos Islands, Ecuador

Pete Oxford / Galapagos Sea Lion (Zalophus wollebaeki) group on beach, Gardner Bay, Espanola Island, Galapagos Islands, Ecuador

Pete Oxford / Galapagos Sea Lion (Zalophus wollebaeki) group and tourists, Gardner Bay, Espanola Island, Galapagos Islands, Ecuador

Tui De Roy / Waved Albatross (Phoebastria irrorata) nesting colony and researcher, Hood Island, Galapagos Islands, Ecuador

Pete Oxford / Swallow-tailed gull (Larus / Creagrus furcatus) on rock, at sunset. Punto Cevallos, Española (Hood) Island, Galapagos islands, Equador, South America

Pete Oxford / Nazca booby (Sula dactylatra granti) standing on rock, Punto Cevallos, Española (Hood) Island, Galapagos islands, Equador, South America

Pete Oxford / Swallow-tailed gull (Larus / Creagrus furcatus) flying over Pacific ocean, Punto Cevallos, Española (Hood) Island, Galapagos islands, Equador, South America

Pete Oxford / Head portrait of Waved albatross (Phoebastria irrorata) Punto Cevallos, Española (Hood) Island, Galapagos islands, Equador, South America

Pete Oxford / Silhouette of Waved albatross (Phoebastria irrorata) Punto Cevallos, Española (Hood) Island, Galapagos islands, Equador, South America

Pete Oxford / Researchers measuring the bill of a Waved albatross (Phoebastria irrorata) Punto Cevallos, Española (Hood) Island, Galapagos islands, Equador, South America May 2008

Pete Oxford / Close up of Waved albatross feet (Phoebastria irrorata) incubating egg, Punto Cevallos, Española (Hood) Island, Galapagos islands, Equador, South America

Pete Oxford / Scientists attaching satellite tracking device to a Waved albatross (Phoebastria irrorata) Punto Cevallos, Española (Hood) Island, Galapagos islands, Equador, South America May 2008

Pete Oxford / Researchers measuring and collecting data from a Waved albatross (Phoebastria irrorata) Punto Cevallos, Española (Hood) Island, Galapagos islands, Equador, South America May 2008

Pete Oxford / Waved albatross (Phoebastria irrorata) incubating egg on beach, Punto Cevallos, Española (Hood) Island, Galapagos islands, Equador, South America

Pete Oxford / Swallow-tailed gull (Larus / Creagrus furcatus) flying over Pacific ocean, Punto Cevallos, Española (Hood) Island, Galapagos islands, Equador, South America

Pete Oxford / Close up of Nazca booby (Sula dactylatra granti) eye, tucked behind wing, Punto Cevallos, Española (Hood) Island, Galapagos islands, Equador, South America

Pete Oxford / Head portrait of Swallow-tailed gull (Larus / Creagrus furcatus) calling, Punto Cevallos, Española (Hood) Island, Galapagos islands, Equador, South America

Pete Oxford / Swallow-tailed gull (Larus / Creagrus furcatus) calling on nest, Punto Cevallos, Española (Hood) Island, Galapagos islands, Equador, South America

Tui De Roy / Saddleback Galapagos Tortoise (Chelonoidis nigra hoodensis) captive-bred young awaiting release back onto their islands of origin, Galapagos Islands, Ecuador

Tui De Roy / Saddleback Galapagos Tortoise (Chelonoidis nigra hoodensis) captive-bred hatchling emerging from egg, Galapagos Islands, Ecuador

Tui De Roy / Saddleback Galapagos Tortoise (Chelonoidis nigra hoodensis) captive-bred hatchlings emerging from eggs, Galapagos Islands, Ecuador

Tui De Roy / Saddleback Galapagos Tortoise (Chelonoidis nigra hoodensis) captive-bred young are measured and branded in preparation for release back onto their islands of origin, Galapagos Islands, Ecuador

Tui De Roy / Saddleback Galapagos Tortoise (Chelonoidis nigra hoodensis) captive-bred hatchling emerging from egg, Galapagos Islands, Ecuador

Tui De Roy / Saddleback Galapagos Tortoise (Chelonoidis nigra hoodensis) named Diego, an old male returned to the Galapagos from the San Diego Zoo in 1977 and sire of large number of young in captive breeding prog...

Tui De Roy / Saddleback Galapagos Tortoise (Chelonoidis nigra hoodensis) named Diego, an old male returned to the Galapagos from the San Diego Zoo in 1977 and sire of large number of young in captive breeding prog...

Tui De Roy / Saddleback Galapagos Tortoise (Chelonoidis nigra hoodensis) named Diego, an old male returned to the Galapagos from the San Diego Zoo in 1977 and sire of large number of young in captive breeding prog...

Tui De Roy / Saddleback Galapagos Tortoise (Chelonoidis nigra hoodensis) named Diego, an old male returned to the Galapagos from the San Diego Zoo in 1977 and sire of large number of young in captive breeding prog...

Tui De Roy / Saddleback Galapagos Tortoise (Chelonoidis nigra hoodensis) captive-bred young awaiting release back onto its island of origin, Galapagos Islands, Ecuador

Tom Vezo / Masked / Blue faced booby (Sula dactylatra) chick, Hood Island, Galapagos

Pete Oxford / Two Nazca boobies (Sula dactylatra granti) on coast, Punta Cevallos, Española / Hood Island, Galapagos Islands

Pete Oxford / Waved albatross (Phoebastria irrorata) fitted with satellite tracking device, Punta Suarez, Española / Hood Island, Galapagos Islands

Pete Oxford / Blue-footed booby (Sula nebouxii excisa) pair, courtship display, Punta Cevallos, Española / Hood Island, Galapagos Islands

Pete Oxford / Nazca booby (Sula granti) perched on rock, Punta Cevallos, Española / Hood Island, Galapagos Islands

Pete Oxford / Measuring bill size of Waved albatross (Phoebastria irrorata) Punta Suarez, Española / Hood Island, Galapagos Islands

Pete Oxford / Blue-footed booby (Sula nebouxii excisa) pair, courtship, Punta Cevallos, Española / Hood Island, Galapagos Islands

Pete Oxford / Swallow-tailed gull (Creagrus furcatus) flying, Punto Cevallos, Española / Hood Island, Galapagos Islands

Pete Oxford / Blue-footed booby (Sula nebouxii excisa) pair, courtship, Punta Cevallos, Española / Hood Island, Galapagos Islands

Pete Oxford / Blue-footed booby (Sula nebouxii excisa) portrait, Punta Cevallos, Española / Hood Island, Galapagos Islands

Pete Oxford / Nazca booby (Sula dactylatra granti) on coast, Punta Cevallos, Española / Hood Island, Galapagos Islands

Pete Oxford / Waved albatross (Phoebastria irrorata) on nest with egg, fitted with satellite tracking device, Punta Suarez, Española / Hood Island, Galapagos Islands

Pete Oxford / Research worker carries Waved albatross (Phoebastria irrorata) Punta Suarez, Española / Hood Island, Galapagos Islands

Pete Oxford / Blue-footed booby (Sula nebouxii excisa) pair, courtship display, Punta Cevallos, Española / Hood Island, Galapagos Islands

Pete Oxford / Blue-footed booby (Sula nebouxii excisa) scratching, Punta Cevallos, Española / Hood Island, Galapagos Islands

Pete Oxford / Swallow tailed gull (Larus furcatus) flying, note tagging ring, Punto Cevallos, Española / Hood Island, Galapagos Islands

Pete Oxford / Juvenile Swallow tailed gull (Larus / Creagrus furcatus) and Marine iguana (Amblyrhynchus cristatus) Punto Cevallos, Espaola / Hood Island, Galapagos Islands

Pete Oxford / Swallow-tailed Gull (Larus furcatus) flying, Punto Cevallos, Española / Hood Island, Galapagos Islands

Pete Oxford / Reading PIT tag of Waved albatross (Phoebastria irrorata) Punta Suarez, Española / Hood Island, Galapagos Islands

Pete Oxford / Measuring bill size of Waved albatross (Phoebastria irrorata) Punta Suarez, Española / Hood Island, Galapagos Islands