Mark MacEwen / Spectacled Caiman eye (Caiman crocodilus) juvenile in Hato el Cedral, Los Llanos Apure State in Venezuela.

Mark MacEwen / Spectacled Caiman (Caiman crocodilus) juvenile in pool in Hato el Cedral, Los Llanos Apure State in Venezuela.

Mark MacEwen / Spectacled Caiman (Caiman crocodilus) juvenile being filmed with an innovision scope, in Hato el Cedral, Los Llanos Apure State in Venezuela.

Mark MacEwen / Spectacled Caiman (Caiman crocodilus) dead on dry lake bed on wetlands which dry up every year, Hato el Cedral, Los Llanos Apure State in Venezuela.

Pete Oxford / Rusty-margined Flycatcher (Myiozetetes cayanensis) perching. Orinoco River, north of Puerto Ayacucho. Apure Province, Venezuela, February.

Pete Oxford / Mopoyo burial site. Here the bodies which are bound in palm leaves are placed under a granite overhang or shallow cave. Orinoco River, Apure Province, Venezuela, February 2009.

Pete Oxford / Brown-throated Parakeet (Aratinga pertinax) perching. Orinoco River, Apure Province, Venezuela / Colombia border.

Pete Oxford / Rusty-margined Flycatcher (Myiozetetes cayanensis) perching. Orinoco River, north of Puerto Ayacucho. Apure Province, Venezuela, February.

Pete Oxford / Mopoyo burial site. Here the bodies which are bound in palm leaves are placed under a granite overhang or shallow cave. Orinoco River, Apure Province, Venezuela, February 2009.

Pete Oxford / Brown-throated Parakeet (Aratinga pertinax) perching. Orinoco River, Apure Province, Venezuela / Colombia border.

Pete Oxford / Egret Tracks on sand. Orinoco River, Apure Province, Venezuela.

Pete Oxford / Yellow-spotted River Turtles / Side Necked Terrapin (Podocnemis unifilis). A captive ready for reintroduction. Orinoco River, Apure Province, Venezuela. South America.

Pete Oxford / Parrot Snake (Liophis ahaetulla) against bark. Orinoco River, Apure Province, Venezuela.

Pete Oxford / Orinoco River before sunrise, north of Puerto Ayacucho. Apure Province, Venezuela / Colombia border, February 2009.

Pete Oxford / Black Skimmers (Rynchops niger) resting on flat river bank. Orinoco River, Apure Province, Venezuela.

Pete Oxford / Savanna Side-necked Turtle (Podocnemis vogli) in shallow water. Orinoco River, Apure Province, Venezuela.

Pete Oxford / Large-billed Tern (Phaetusa simplex) in flight. Orinoco River, Apure Province, Venezuela.

Pete Oxford / Large-billed Tern (Phaetusa simplex) in flight. Orinoco River, Apure Province, Venezuela.

Pete Oxford / Large-billed Tern (Phaetusa simplex) in flight. Orinoco River, Apure Province, Venezuela.

Pete Oxford / South American River Turtle (Podocnemis expansa) researchers weighing individual, part of captive breeding program, Orinoco River, Apure, Venezuela

Pete Oxford / South American River Turtle (Podocnemis expansa) researchers weighing individual, part of captive breeding program, Orinoco River, Apure, Venezuela

Pete Oxford / Rusty-margined Flycatcher (Myiozetetes cayanensis), Orinoco River, Apure, Venezuela

Pete Oxford / South American River Turtle (Podocnemis expansa) after laying eggs, part of reintroduction to the wild program, Playita Beach, Orinoco River, Apure, Venezuela

Pete Oxford / South American River Turtle (Podocnemis expansa) after laying eggs, part of reintroduction to the wild program, Playita Beach, Orinoco River, Apure, Venezuela

Pete Oxford / Orinoco Goose (Neochen jubata), Orinoco River, north of Puerto Ayacucho, Apure, Venezuela

Pete Oxford / Red-capped Cardinal (Paroaria gularis) juvenile, Orinoco River, Apure, Venezuela

Pete Oxford / Mango (Mangifera indica) fruit, Orinoco River, Apure, Venezuela

Pete Oxford / South American River Turtle (Podocnemis expansa) tracks, Orinoco River, Apure, Venezuela

Pete Oxford / South American River Turtle (Podocnemis expansa) tracks being followed by researcher, Orinoco River, Apure, Venezuela

Pete Oxford / South American River Turtle (Podocnemis expansa) nests being dug up for relocation to safer, higher ground, part of reintroduction to the wild program, Playita Beach, Orinoco River, Apure, Venezuela

Pete Oxford / Red-capped Cardinal (Paroaria gularis), Orinoco River, Apure, Venezuela

Pete Oxford / Stripe-backed Wren (Campylorhynchus nuchalis), Orinoco River, north of Puerto Ayacucho, Apure, Venezuela

Pete Oxford / Red-capped Cardinal (Paroaria gularis), Orinoco River, Apure, Venezuela

Pete Oxford / South American River Turtle (Podocnemis expansa) group basking, part of reintroduction to the wild program, Playita Beach, Orinoco River, Apure, Venezuela

Pete Oxford / South American River Turtle (Podocnemis expansa) group basking, part of reintroduction to the wild program, Playita Beach, Orinoco River, Apure, Venezuela

Pete Oxford / South American River Turtle (Podocnemis expansa) group basking, part of reintroduction to the wild program, Playita Beach, Orinoco River, Apure, Venezuela

Pete Oxford / South American River Turtle (Podocnemis expansa) and Yellow-spotted Amazon River Turtle (Podocnemis unifilis) yearlings in rearing program, Orinoco River, Apure, Venezuela

Pete Oxford / South American River Turtle (Podocnemis expansa) and Yellow-spotted Amazon River Turtle (Podocnemis unifilis) yearlings in rearing program, Orinoco River, Apure, Venezuela

Pete Oxford / Yellow-spotted Amazon River Turtle (Podocnemis unifilis) tracks from female that came to shore to lay eggs, Orinoco River, Apure, Venezuela

Pete Oxford / Yellow-spotted Amazon River Turtle (Podocnemis unifilis) tracks from female that came to shore to lay eggs, Orinoco River, Apure, Venezuela

Pete Oxford / South American River Turtle (Podocnemis expansa) nests being dug up for relocation to safer, higher ground, part of reintroduction to the wild program, Playita Beach, Orinoco River, Apure, Venezuela

Pete Oxford / South American River Turtle (Podocnemis expansa) yearling, part of reintroduction to the wild program, Orinoco River, Apure, Venezuela

Pete Oxford / South American River Turtle (Podocnemis expansa) nests being dug up for relocation to safer, higher ground, part of reintroduction to the wild program, Playita Beach, Orinoco River, Apure, Venezuela

Pete Oxford / South American River Turtle (Podocnemis expansa) yearling, part of reintroduction to the wild program, Orinoco River, Apure, Venezuela

Pete Oxford / South American River Turtle (Podocnemis expansa) yearlings, part of reintroduction to the wild program, Orinoco River, Apure, Venezuela

Pete Oxford / South American River Turtle (Podocnemis expansa) yearlings, part of reintroduction to the wild program, Orinoco River, Apure, Venezuela

Pete Oxford / South American River Turtle (Podocnemis expansa) yearling being held by researcher, part of reintroduction to the wild program, Playita Beach, Orinoco River, Apure, Venezuela

Pete Oxford / Capybara (Hydrochoerus hydrochaeris), caiman and catfish bushmeat illegally for sale, confiscated from stalls on the main road in the Llanos, near San Fernando de Apure, Venezuela

Pete Oxford / South American River Turtle (Podocnemis expansa) egg being dug up for relocation to safer, higher ground, part of reintroduction to the wild program, Playita Beach, Orinoco River, Apure, Venezuela

Pete Oxford / South American River Turtle (Podocnemis expansa) nest being dug up for relocation to safer, higher ground, part of reintroduction to the wild program, Playita Beach, Orinoco River, Apure, Venezuela

Pete Oxford / South American River Turtle (Podocnemis expansa) yearling, part of reintroduction to the wild program, Orinoco River, Apure, Venezuela

Pete Oxford / Red-crowned Woodpecker (Melanerpes rubricapillus) feeding on fruit, Orinoco River, north of Puerto Ayacucho, Apure, Venezuela

Pete Oxford / South American River Turtle (Podocnemis expansa) researchers digging up nests for relocation, are watched by guard, part of reintroduction to the wild program, Orinoco River, Apure, Venezuela

Pete Oxford / Yellow-rumped Cacique (Cacicus cela) feeding on fruit, Orinoco River, north of Puerto Ayacucho, Apure, Venezuela

Pete Oxford / Brown-throated Parakeet (Aratinga pertinax), Orinoco River, north of Puerto Ayacucho, Apure, Venezuela

Pete Oxford / South American River Turtle (Podocnemis expansa) tracks, Orinoco River, Apure, Venezuela

Pete Oxford / Savanna Side-necked Turtle (Podocnemis vogli) released after being found by fishermen in the river, Orinoco River, Apure, Venezuela

Pete Oxford / Savanna Side-necked Turtle (Podocnemis vogli) released after being found by fishermen in the river, Orinoco River, Apure, Venezuela

Pete Oxford / Savanna Side-necked Turtle (Podocnemis vogli) released after being found by fishermen in the river, Orinoco River, Apure, Venezuela

Pete Oxford / South American River Turtle (Podocnemis expansa) researchers taking biometric data, part of part of reintroduction to the wild program, Playita Beach, Orinoco River, Apure, Venezuela

Pete Oxford / South American River Turtle (Podocnemis expansa) rear flipper, part of reintroduction to the wild program, Playita Beach, Orinoco River, Apure, Venezuela

Pete Oxford / South American River Turtle (Podocnemis expansa) carried back to river after biometric data was taken, part of reintroduction to the wild program, Playita Beach, Orinoco River, Apure, Venezuela

Pete Oxford / South American River Turtle (Podocnemis expansa) yearlings, part of reintroduction to the wild program, Orinoco River, Apure, Venezuela

Pete Oxford / South American River Turtle (Podocnemis expansa) researcher taking eggs for re-burial, part of reintroduction to the wild program, Playita Beach, Orinoco River, Apure, Venezuela

Pete Oxford / South American River Turtle (Podocnemis expansa) having carapace marked for future identification, part of reintroduction to the wild program, Orinoco River, Apure, Venezuela

Pete Oxford / Yellow-spotted Amazon River Turtle (Podocnemis unifilis) yearlings, part of reintroduction to the wild program, Orinoco River, Apure, Venezuela

Pete Oxford / South American River Turtle (Podocnemis expansa) after laying eggs, part of reintroduction to the wild program, Playita Beach, Orinoco River, Apure, Venezuela

Pete Oxford / Yellow-spotted Amazon River Turtle (Podocnemis unifilis) nests being dug up to be relocated, Orinoco River, Apure, Venezuela

Pete Oxford / Yellow-spotted Amazon River Turtle (Podocnemis unifilis) yearlings, part of reintroduction to the wild program, Orinoco River, Apure, Venezuela

Pete Oxford / South American River Turtle (Podocnemis expansa) after laying eggs returning to river, part of reintroduction to the wild program, Playita Beach, Orinoco River, Apure, Venezuela

Pete Oxford / South American River Turtle (Podocnemis expansa) after laying eggs returning to river, part of reintroduction to the wild program, Playita Beach, Orinoco River, Apure, Venezuela

Pete Oxford / South American River Turtle (Podocnemis expansa) young held by girl, part of reintroduction to the wild program, Orinoco River, Apure, Venezuela

Pete Oxford / Xerophytic vegetation on rock, Orinoco River, Apure, Venezuela

Pete Oxford / Orinoco River, Apure, Venezuela

Pete Oxford / South American River Turtle (Podocnemis expansa) after laying eggs returning to river, part of reintroduction to the wild program, Playita Beach, Orinoco River, Apure, Venezuela

Pete Oxford / South American River Turtle (Podocnemis expansa) after laying eggs returning to river, part of reintroduction to the wild program, Playita Beach, Orinoco River, Apure, Venezuela

Pete Oxford / South American River Turtle (Podocnemis expansa) after laying eggs returning to river, part of reintroduction to the wild program, Playita Beach, Orinoco River, Apure, Venezuela

Pete Oxford / South American River Turtle (Podocnemis expansa) after laying eggs returning to river, part of reintroduction to the wild program, Playita Beach, Orinoco River, Apure, Venezuela

Pete Oxford / South American River Turtle (Podocnemis expansa) researchers taking biometric data, part of reintroduction to the wild program, Playita Beach, Orinoco River, Apure, Venezuela

Pete Oxford / Smooth-sided Toad (Bufo guttatus), Orinoco River, Apure, Venezuela

Pete Oxford / South American River Turtle (Podocnemis expansa) after laying eggs, part of reintroduction to the wild program, Playita Beach, Orinoco River, Apure, Venezuela

Pete Oxford / South American River Turtle (Podocnemis expansa) after laying eggs, part of reintroduction to the wild program, Playita Beach, Orinoco River, Apure, Venezuela

Pete Oxford / Orinoco River with mountains, Apure, Venezuela

Pete Oxford / Orinoco River, north of Puerto Ayacucho, Apure, Venezuela

Pete Oxford / Orinoco River, north of Puerto Ayacucho, Apure, Venezuela

Pete Oxford / Orinoco River seen from Puerto Ayacucho, Apure, Venezuela