David Kjaer / Ptarmigan (Lagopus mutus) male in early spring snow with mid-way plumage, Cairngorms, Scotland April

David Kjaer / Ptarmigan (Lagopus mutus) male in early spring with mid-way plumage, Cairngorms, Scotland, April

David Kjaer / Ptarmigan (Lagopus mutus) male in early spring with mid-way plumage with snow in background, Cairngorms, Scotland, April

David Kjaer / Pale tussock moth (Calliteara pudibunda) Wiltshire, UK

Pascal Kobeh / Haller's round ray (Urolophus / Urobatus halleri) laying on the bottom, Panama Pacific Ocean

Alex Hyde / Fer-de-lance (Bothrops asper) juvenile camouflaged on the rainforest floor at the base of a Strangle fig (Ficus sp) Osa Peninsula, Costa Rica,

Gerrit Vyn / Dunlin (Calidris alpina) close of view of four eggs in nest, Yukon Delta National Wildlife Refuge, Alaska, USA June.

Stephen Dalton / Natterjack toad (Epidalea calamita) camouflaged on flowers, Extremadura, Spain

Gerrit Vyn / Black-bellied Plover (Pluvialis squatarola) looking down on nest and eggs, camouflaged with ground plants, Yukon Delta National Wildlife Refuge, Alaska, USA June

Gerrit Vyn / Pacific Golden-Plover (Pluvialis fulva) nest and eggs, Yukon Delta National Wildlife Refuge, Alaska, USA June

Gerrit Vyn / Whimbrel (Numenius phaeopus) nest and eggs on tundra, Yukon Delta National Wildlife Refuge, Alaska, USA June.

Brent Stephenson / Mottled petrel (Pterodroma inexpectata) showing the distinctive underwing and body pattern, Stewart Island, New Zealand, January.