Bence Mate / Red footed falcon (Falco vespertinus) pair mating, Lake Csaj, Kiskunsagi National Park, Pusztaszer, Hungary. February.

Bence Mate / Red footed falcon (Falco vespertinus) pair mating, Lake Csaj, Kiskunsagi National Park, Pusztaszer, Hungary. February.

Michael Milicia/ BIA / Piping Plover (Charadrius melodus) in broken wing display, Massachusetts

Matthias Breiter / Polar Bear (Ursus maritimus) males fighting, Hudson Bay, Manitoba, Canada

Lou Coetzer / Pintailed whydah (Vidua macroura) male displaying to female, Masai Mara, Kenya.

Andres M. Dominguez / Red deer (Cervus elaphus) stag and two hinds, Los Alcornocales Natural Park, southern Spain, September.

Markus Varesvuo / Female Capercaillie (Tetrao urogallus) ready to mate, Vaala, Finland, May.

Donald M. Jones / Blue Grouse (Dendragapus obscurus) male displaying, western Montana

Winfried Wisniewski / Ruff (Philomachus pugnax) male displaying at lek, Varanger Peninsula, Norway

Thomas Marent / Gelada Baboon (Theropithecus gelada) male and females huddling for warmth, Simien Mountains National Park, Ethiopia

Thomas Marent / Mandrill (Mandrillus sphinx) male in defensive posture, Lekedi Natural Preserve, Gabon

Thomas Marent / Drill (Mandrillus leucophaeus) male in defensive posture, Afi Mountain Wildlife Sanctuary, Nigeria

Bence Mate / Red footed falcon (Falco vespertinus) pair mating, Lake Csaj, Kiskunsagi National Park, Pusztaszer, Hungary. February.

Bence Mate / Red footed falcon (Falco vespertinus) pair mating, Lake Csaj, Kiskunsagi National Park, Pusztaszer, Hungary. February.

Michael Milicia/ BIA / Piping Plover (Charadrius melodus) in broken wing display, Massachusetts

Matthias Breiter / Polar Bear (Ursus maritimus) males fighting, Hudson Bay, Manitoba, Canada

Lou Coetzer / Pintailed whydah (Vidua macroura) male displaying to female, Masai Mara, Kenya.

Andres M. Dominguez / Red deer (Cervus elaphus) stag and two hinds, Los Alcornocales Natural Park, southern Spain, September.

Markus Varesvuo / Female Capercaillie (Tetrao urogallus) ready to mate, Vaala, Finland, May.

Donald M. Jones / Blue Grouse (Dendragapus obscurus) male displaying, western Montana

Winfried Wisniewski / Ruff (Philomachus pugnax) male displaying at lek, Varanger Peninsula, Norway

Thomas Marent / Gelada Baboon (Theropithecus gelada) male and females huddling for warmth, Simien Mountains National Park, Ethiopia

Thomas Marent / Mandrill (Mandrillus sphinx) male in defensive posture, Lekedi Natural Preserve, Gabon

Thomas Marent / Drill (Mandrillus leucophaeus) male in defensive posture, Afi Mountain Wildlife Sanctuary, Nigeria

Oscar Dewhurst / Hoatzin (Ophisthocomus hoazin) perched on wooden bar overlooking oxbow lake. Manu National Park, Madre de Dios, Peru. September

Alex Hyde / Brown / Tufted Capuchin (Cebus apella) family group in cloud forest, Manu Biosphere Reserve, Peru.

Nick Garbutt / Andean cock-of-the-rock (Rupicola peruvianus), male displaying at lek in tree. Manu Biosphere Reserve, Amazonia, Peru.

Thomas Marent / Emperor Tamarin (Saguinus imperator), Manu National Park, Peru

Glenn Bartley / Hoatzin (Opisthocomus hoazin) pair, Manu National Park, Peru

Glenn Bartley / Limpkin (Aramus guarauna), Manu National Park, Peru

Thomas Marent / Andean Cock-of-the-rock (Rupicola peruvianus) male, Manu National Park, Peru

Pete Oxford / Black caiman basking with butterfly on snout {Caiman niger} Manu National Park, Peru

Pete Oxford / Violet fronted brilliant hummingbird {Heliodoxa leadbeateri} perching, Peru. Manu

Pete Oxford / Violet fronted brilliant hummingbird {Heliodoxa leadbeateri} Manu NP. Peru

Pete Oxford / Cloud forest stream. Manu National Park, Peru, South America

JIM CLARE / Large headed capuchin (Sapajus macrocephalus) monkey feeding on Maticia flowers, Manu NP, Peru.

Pete Oxford / Buttress roots (size compared with man). Manu NP, Peru, South America

David Tipling / Large headed capuchin (Sapajus macrocephalus). Cloud Forest, Manu NP, Peru, South America

David Tipling / Hoatzin in tree, Manu National Park, Peru.

David Tipling / Primary lowland rainforest, Manu National Park, Peru

David Tipling / Primary lowland rainforest, Manu National Park, Peru

David Tipling / Primary lowland rainforest, Manu National Park, Peru

David Tipling / Primary lowland rainforest, Manu National Park, Peru

Staffan Widstrand / Tree buttress roots - special adaptation for shallow soils in tropical rainforest. Manu NP Peru.

Pete Oxford / African elephant reaching upo with trunk to feed on seed pods. Manu pools NP, Zimbabwe {Loxidonta africana}

Staffan Widstrand / Interior of Cloudforest / mountain forest, Manu NP Peru.

Pete Oxford / Hoatzin (Opisthocomus hoazin). Manu NP, Peru

Oscar Dewhurst / Social flycatcher (Myiozetetes similis) perched on dead branch overhanging oxbow lake. Manu National Park, Madre de Dios, Peru. September

Oscar Dewhurst / Horned screamers (Anhima cornuta) calling at the edge of oxbow lake. Manu National Park, Madre de Dios, Peru. September. Cropped

Oscar Dewhurst / Horned screamer (Anhima cornuta) Manu National Park, Madre de Dios, Peru. September.

Oscar Dewhurst / Social flycatcher (Myiozetetes similis) perched on branch overhanging oxbow lake. Manu National Park, Madre de Dios, Peru. September. Cropped

Oscar Dewhurst / Hoatzin (Ophisthocomus hoazin) perched on fallen tree branch. Manu National Park, Madre de Dios, Peru. September

Oscar Dewhurst / Hoatzin (Ophisthocomus hoazin) perched on wooden bar overlooking oxbow lake. Manu National Park, Madre de Dios, Peru. September

Oscar Dewhurst / Hoatzin (Ophisthocomus hoazin) portrait at Peruvian oxbow lake. Manu National Park, Madre de Dios, Peru. September. Cropped

Alex Hyde / Three-striped poison frog (Ameerega trivittata) amongst leaf litter on lowland rainforest floor. Manu Biosphere Reserve, Amazonia, Peru. November.

Alex Hyde / Odontoglossum mycinatum, Manu Cloud Forest, Acjanaco Pass at 3500 metres altitude, Andes, Peru. November.

Alex Hyde / Cosinga hawker moth (Metardaris cosinga) found at 3500 metres altitude in transition zone between Manu cloudforest and the puna grasslands of the high Andes. Acjanaco Pass, Peru.

Alex Hyde / Unidentified moth caterpillar covered in defensive urticating hairs. Manu Biosphere Reserve, Amazonia, Peru. November.

Alex Hyde / Spiny lobster katydid (Panoploscelis sp.) on tree trunk. Manu Biosphere Reserve, Amazonia, Peru. November.

Alex Hyde / Leaf-mimicking Katydid (Tettigoniidae) photographed on a white background in mobile field studio. Manu Biosphere Reserve, Amazonia, Peru. November.

Alex Hyde / Tailless Whipscorpion (Heterophrynus elephas) hunting invertebrate prey at night on tree butress root. The raptorial pedipalps are extended, with which it grabs its prey much like a praying mantis. Ma...

Alex Hyde / Amazonian Horned Frog (Ceratophrys cornuta) camouflaged amongst leaf litter on lowland rainforest floor, waiting to ambush passing prey. Manu Biosphere Reserve, Amazonia, Peru. November.

Alex Hyde / Amazonian Horned Frog (Ceratophrys cornuta) camouflaged amongst leaf litter on lowland rainforest floor, waiting to ambush passing prey. Manu Biosphere Reserve, Amazonia, Peru. November.

Alex Hyde / Red brocket deer (Mazama americana) at Blanquillo Clay Lick, Manu Biosphere Reserve, Peru. November.

Alex Hyde / Red-and-Green Macaws (Ara chloropterus), feeding at the wall of a riverside clay lick. Blanquillo Clay Lick, Manu Biosphere Reserve, Peru. November.

Alex Hyde / Red-and-Green Macaws (Ara chloropterus), feeding at the wall of a riverside clay lick. Blanquillo Clay Lick, Manu Biosphere Reserve, Peru. November.

Alex Hyde / Red-and-Green Macaws (Ara chloropterus), feeding at the wall of a riverside clay lick. Blanquillo Clay Lick, Manu Biosphere Reserve, Peru. November.

Alex Hyde / Red-and-green macaw (Ara chloropterus) in flight, Blanquillo Clay Lick, Manu Biosphere Reserve, Peru. November.

Alex Hyde / Mealy Parrots (Amazona farinosa) feeding at the wall of a clay lick. Blanquillo Clay Lick, Manu Biosphere Reserve, Peru. November.

Alex Hyde / Mixed flock of Mealy Parrots (Amazona farinosa) and Blue-headed Parrots (Pionus menstruus) feeding at the wall of a clay lick. Blanquillo Clay Lick, Manu Biosphere Reserve, Peru. November.

Alex Hyde / Mealy Parrots (Amazona farinosa) in flight. Blanquillo Clay Lick, Manu Biosphere Reserve, Peru. November.

Alex Hyde / Lichen-mimicking Katydid (Tettigoniidae), photographed on a white background in mobile field stuio. Manu Biosphere Reserve, Amazonia, Peru. November.

Alex Hyde / Amazonian Horned Frog (Ceratophrys cornuta) camouflaged amongst leaf litter on lowland rainforest floor, waiting to ambush passing prey. Manu Biosphere Reserve, Amazonia, Peru. November.

Alex Hyde / Hoatzin (Opisthocomus hoazin) Cocha Salvador ox-bow lake. Manu Biosphere Reserve, lowland Amazon rainforest, Peru.

Alex Hyde / Green-banded Urania (Urania leilus) moths drinking salts from mineral-rich river clay, a behaviour know as 'puddling'. On the banks of the Manu River, Manu Biosphere Reserve, Amazonia, Peru. N...

Alex Hyde / Blue Doctor butterfly (Rhetus periander) drinking salts from mineral-rich river clay, a behaviour know as 'puddling'. On the banks of the Manu River, Manu Biosphere Reserve, Amazonia, Peru. No...

Alex Hyde / Monkey Slug Caterpillar (Limacodidae) mimicking a spider. Lowland rainforest, Manu Biosphere Reserve, Amazonia, Peru. November.

Alex Hyde / River running through cloud forest, Manu Biosphere Reserve, Amazonia, Peru.

Alex Hyde / Understory plants in cloud forest, Manu Biosphere Reserve, Amazonia, Peru.

Alex Hyde / Moss-mimicking Katydid / Bush Cricket (Tettigoniidae) camouflaged amongst cloud forest understory vegetation. 1600 metres altitude, Manu Biosphere Reserve, Peru. November.

Alex Hyde / Detail of White Witch Moth (Thysania agrippina) in cloud forest, Manu Biosphere Reserve, Amazonia, Peru.

Alex Hyde / White Witch Moth (Thysania agrippina) camouflaged on tree trunk in cloud forest. This species rests by day with its body perpendicular to the tree trunk. Manu Biosphere Reserve, Amazonia, Peru.

Alex Hyde / White Witch Moth (Thysania agrippina) camouflaged on tree trunk in cloud forest. This species rests by day with its body perpendicular to the tree trunk. Manu Biosphere Reserve, Amazonia, Peru.

Alex Hyde / Glass Frog (Centrolenidae, probably Hyalinobatrachium sp.) photographed on glass. Found in cloud forest, Manu Biosphere Reserve, Peru. November.

Alex Hyde / Glass Frog (Centrolenidae, probably Hyalinobatrachium sp.) photographed on glass, showing transparent underside. Found in cloud forest, Manu Biosphere Reserve, Peru. November. Digital composite.

Alex Hyde / Glass Frog (Centrolenidae, probably Hyalinobatrachium sp.) photographed on glass. showing transparent underside. Found in cloud forest, Manu Biosphere Reserve, Peru. November.

Alex Hyde / Andean Cock-of-the-rock male {Rupicola peruvianus} at lek in cloud forest canopy. Manu Biosphere Reserve, Amazonia, Peru. November.

Alex Hyde / Andean Cock-of-the-rock male {Rupicola peruvianus} at lek in cloud forest canopy. Manu Biosphere Reserve, Amazonia, Peru. November.

Alex Hyde / Andean Cock-of-the-rock males {Rupicola peruvianus} at lek in cloud forest canopy. Manu Biosphere Reserve, Amazonia, Peru.

Alex Hyde / Toadstools (Mycena sp.) growing on rainforest floor. Manu Biosphere Reserve, Amazonia, Peru. November.

Alex Hyde / Epiphytes including Bromeliads growing in cloud forest canopy, Manu Biosphere Reserve, Amazonia, Peru.

Alex Hyde / Andean Cock-of-the-rock male {Rupicola peruvianus} at lek in cloud forest canopy. Manu Biosphere Reserve, Amazonia, Peru. November.

Alex Hyde / Silk Moth (Arsenura rebeli) female in cloud forest, Manu Biosphere Reserve, Peru. November.

Alex Hyde / Plants growing in cloud forest understory, Manu Biosphere Reserve, Amazonia, Peru.

Alex Hyde / Katydid / Bush Cricket (Tettigoniidae) camouflaged amongst cloud forest understory vegetation. 1600 metres altitude, Manu Biosphere Reserve, Peru. November.

Alex Hyde / Katydid / Bush Cricket (Tettigoniidae) camouflaged amongst cloud forest understory vegetation. 1600 metres altitude, Manu Biosphere Reserve, Peru. November.

Alex Hyde / Cloud Forest, Manu Biosphere Reserve, Amazonia, Peru.

Alex Hyde / Dobsonfly female (Corydalinae) in cloud forest, Manu Biosphere Reserve, Peru.

Alex Hyde / Dobsonfly female (Corydalinae) in cloud forest, Manu Biosphere Reserve, Peru.

Alex Hyde / Dobsonfly female (Corydalinae) in cloud forest, Manu Biosphere Reserve, Peru.

Alex Hyde / Hooded / Leaf Mantis (Choeradodis sp.) camouflaged amongst understory vegetation in cloud forest, Manu Biosphere Reserve, Peru. November.

Alex Hyde / Harvestman (Opiliones) fluorescing under ultraviolet light at night. Cloud forest, Manu Biosphere Reserve, Peru. November.

Alex Hyde / Crab Spider (Thomisidae) waiting in an orchid to ambush its prey. Cloud forest, Manu Biosphere Reserve, Peru. November.

Alex Hyde / Crab Spider (Thomisidae) waiting in an orchid to ambush its prey. Cloud forest, Manu Biosphere Reserve, Peru. November.

Alex Hyde / Andean Cock-of-the-rock male (Rupicola peruvianus) at lek in cloud forest canopy. Manu Biosphere Reserve, Amazonia, Peru. November.

Alex Hyde / Andean Cock-of-the-rock male (Rupicola peruvianus) at lek in cloud forest canopy. Manu Biosphere Reserve, Amazonia, Peru. November.

Alex Hyde / Andean Cock-of-the-rock male (Rupicola peruvianus) at lek in cloud forest canopy. Manu Biosphere Reserve, Amazonia, Peru. November.

Alex Hyde / Lubber grasshopper (Chromacris sp.) with spiny legs raised in defensive pose and bearing aposematic markings to warn of its toxicity. Cloud forest understory vegetation, 1600 metres altitude, Manu Bio...

Alex Hyde / Brown Agouti (Dasyprocta variegata) in cloud forest, Manu Biosphere Reserve, Peru.

Alex Hyde / Three-striped poison frog (Ameerega trivittata) amongst leaf litter on lowland rainforest floor. Manu Biosphere Reserve, Amazonia, Peru. November.