Ingo Arndt / Water Boatman (Notonecta glauca) with reflection underwater, a true bug of the Heteroptera suborder, Europe

Ingo Arndt / Pond Skater (Gerris sp) using surface tension to walk on water, a true bug of the Heteroptera suborder, Europe

Flip de Nooyer / Eurasian Kestrel (Falco tinnunculus) group of five juveniles in nesting box, Europe

Duncan Usher / Wild Boar (Sus scrofa) three piglets playing, Europe

Ingo Arndt / Common Seal (Phoca vitulina) on beach, Europe

Konrad Wothe / Common Fig (Ficus carica) fruiting, Europe

Albert Lleal / Hybrid Plane (Platanus x hispanica) seed ball, Europe

Silvia Reiche / Mock Strawberry (Potentilla indica) fruit, Europe

Ingo Arndt / Purple Foxglove (Digitalis purpurea) field, Europe

Ingo Arndt / Purple Foxglove (Digitalis purpurea) flowers, Europe

Ingo Arndt / Purple Foxglove (Digitalis purpurea) flowers, Europe

Ingo Arndt / Siberian Iris (Iris sibirica) flower, Europe

Ingo Arndt / Red Poppy (Papaver rhoeas) field, Europe

Ingo Arndt / Red Poppy (Papaver rhoeas) flowers, Europe

Ingo Arndt / Water Stick Insect (Ranatra linearis) waiting for prey, a true bug of the Heteroptera suborder, Europe

Ingo Arndt / Water Stick Insect (Ranatra linearis) waiting for prey, a true bug of the Heteroptera suborder, Europe

Ingo Arndt / Water Boatman (Notonecta glauca) with reflection underwater, a true bug of the Heteroptera suborder, Europe

Ingo Arndt / Pond Skater (Gerris sp) using surface tension to walk on water, a true bug of the Heteroptera suborder, Europe

Ingo Arndt / Water Stick Insect (Ranatra linearis) eating Fly larva prey, a true bug of the Heteroptera suborder, Europe

Ingo Arndt / Red and Black Striped Stink Bug (Graphosoma lineatum) portrait, a true bug of the Heteroptera suborder, Europe

Ingo Arndt / Red and Black Striped Stink Bug (Graphosoma lineatum) portrait, a true bug of the Heteroptera suborder, Europe

Ingo Arndt / Green Shield Bug (Palomena prasina) portrait, a true bug of the Heteroptera suborder, Europe

Ingo Arndt / Fire Bug (Pyrrhocoris apterus) mass mating, a true bug of the Heteroptera suborder, Europe

Ingo Arndt / Fire Bug (Pyrrhocoris apterus) mass mating, a true bug of the Heteroptera suborder, Europe

Ingo Arndt / Fire Bug (Pyrrhocoris apterus) mixed group of nymphs and adults, a true bug of the Heteroptera suborder, Europe

Ingo Arndt / Fire Bug (Pyrrhocoris apterus) pair mating, a true bug of the Heteroptera suborder, Europe

Ingo Arndt / Moss detail showing fruiting heads with spore capsules, Europe

Ingo Arndt / European River Otter (Lutra lutra) portrait, Europe

Ingo Arndt / European River Otter (Lutra lutra) female sleeping in den, Europe

Ingo Arndt / Sheep Tick (Ixodes ricinus) or Pasture Tick on leaf, Europe

Ingo Arndt / Researcher with a variety of insects in lab environment, Europe

Ingo Arndt / European River Otter (Lutra lutra) eating trout, Europe

Jan Vermeer / European Beech (Fagus sylvatica) forest with sunrays streaming through trees in early morning, Europe

Jan Vermeer / European River Otter (Lutra lutra) at surface, Europe

Duncan Usher / Domestic Pig (Sus scrofa domesticus) two piglets with tagged ears, Europe

Winfried Wisniewski / Northern Gannet (Morus bassanus) parent incubating eggs on nest, Europe

Winfried Wisniewski / Common Crane (Grus grus) pair walking, Europe

Ingo Arndt / Common Sunflower (Helianthus annuus) pair of flowers against blue sky, Europe

Ingo Arndt / Common Sunflower (Helianthus annuus) two large, bright yellow flowers in a field of Common Sunflowers, Europe

Jan Vermeer / Gill Mushroom (Pholiota sp) group growing on tree trunk, Europe

Flip de Nooyer / Sunset over wetland, Europe

Flip de Nooyer / English Oak (Quercus robur) in autumn, Europe, Asia and north Africa introduced into North America. Sequence 1 of 4

Flip de Nooyer / English Oak (Quercus robur) in autumn, Europe, Asia and north Africa introduced into North America. Sequence 2 of 4

Flip de Nooyer / Two trees on horizon silhouetted against red sky at dusk, Europe

Jan Vermeer / Wild Boar (Sus scrofa) sow nursing piglets, Europe

Duncan Usher / Mute Swan (Cygnus olor) pair flying, Europe

Duncan Usher / Wild Boar (Sus scrofa) piglets, Europe

Jan Vermeer / Wild Boar (Sus scrofa) piglets competing to nurse, Europe

Jan Vermeer / Wild Boar (Sus scrofa) piglets competing to nurse, Europe

Jan Vermeer / Wild Boar (Sus scrofa) piglets nursing, Europe

Winfried Wisniewski / Common Crane (Grus grus) pair, Europe

Duncan Usher / Wild Boar (Sus scrofa) two piglets on forest floor, Europe

Jan Vermeer / European Beech (Fagus sylvatica) forest in spring, Europe

Jan Vermeer / European Beech (Fagus sylvatica) trail through forest in spring, Europe

Jan Vermeer / Scotch Pine (Pinus sylvestris) trees covered in snow in winter, Europe

Jan Vermeer / Ring-necked Pheasant (Phasianus colchicus) footprints in the sand, Europe

Flip de Nooyer / Red Crossbill (Loxia curvirostra) two males and one female at waterhole, Europe

Flip de Nooyer / Willow Tit (Parus montanus) at water's edge with reflection, Europe

Flip de Nooyer / Common Starling (Sturnus vulgaris) flock flying at dusk, Europe

Flip de Nooyer / Eurasian Oystercatcher (Haematopus ostralegus) flock resting on the beach, Europe

Flip de Nooyer / Sandwich Tern (Thalasseus sandvicensis) pair performing courtship display, Europe

Duncan Usher / Red-breasted Merganser (Mergus serrator) male, Europe

Flip de Nooyer / European Mole Cricket (Gryllotalpa gryllotalpa), Europe

Flip de Nooyer / Great Cormorant (Phalacrocorax carbo) adult drying its wings, Europe

Flip de Nooyer / Crested Tit (Lophophanes cristatus) in pine tree, Europe

Flip de Nooyer / Crested Tit (Lophophanes cristatus) in Pine (Pinus sp) tree, Europe

Flip de Nooyer / Great Tit (Parus major) six on tree trunk, Europe

Duncan Usher / Common Starling (Sturnus vulgaris) flock sitting on crane, Europe

Flip de Nooyer / Ruff (Philomachus pugnax) male displaying to female, Europe

Flip de Nooyer / Pied Avocet (Recurvirostra avosetta) couple mating, Europe

Flip de Nooyer / Mute Swan (Cygnus olor) large flock, Europe

Flip de Nooyer / Water Rail (Rallus aquaticus) walking on ice, Europe

Flip de Nooyer / Eurasian Oystercatcher (Haematopus ostralegus) large flock at shoreline, Europe

Flip de Nooyer / Sandwich Tern (Thalasseus sandvicensis) juvenile male standing in shallow water with reflection, Europe

Konrad Wothe / Great Crested Grebe (Podiceps cristatus) couple courting, Europe

Konrad Wothe / Wood Sandpiper (Tringa glareola) perching on moss mound surrounded by water, Europe

Konrad Wothe / Dalmatian Pelican (Pelecanus crispus) endangered, Europe

Konrad Wothe / Ural Owl (Strix uralensis), Ural Mountains, Europe

Jan Vermeer / Pine Marten (Martes martes) female looking out of tree hole, Europe

Jan Vermeer / Red Fox (Vulpes vulpes) kit among green grasses, Europe

Konrad Wothe / Eurasian Lynx (Lynx lynx) adult reclining on forest floor, Europe

Konrad Wothe / Queen of Spain Fritillary (Issoria lathonia) butterfly on flower, Europe

Konrad Wothe / Wood Nuthatch (Sitta europaea) on tree trunk, Europe

Konrad Wothe / Spotted Nutcracker (Nucifraga caryocatactes) eating seeds from a pine cone, Europe

Flip de Nooyer / Common Crane (Grus grus) group, Europe

Flip de Nooyer / Common Eider (Somateria mollissima) males asleep on water, Europe

Flip de Nooyer / Common Eider (Somateria mollissima) flock on water, Europe

Duncan Usher / Eurasian Wryneck (Jynx torquilla) profile on ground, Europe

Duncan Usher / Common Starling (Sturnus vulgaris) flock flying at sunset, Europe

Jan Vermeer / Common Wood-pigeon (Columba palumbus) on fence in morning mist, Europe

Duncan Usher / Willow Tit (Parus montanus) perching on moss covered log, Europe

Flip de Nooyer / Common Starling (Sturnus vulgaris) flock at sunset, Europe

Duncan Usher / Donkey (Equus asinus) colt running through field, Europe

Jan Vermeer / Mute Swan (Cygnus olor) pair swimming in evening light, Europe

Duncan Usher / Eurasian Bullfinch (Pyrrhula pyrrhula) male and female, Europe

Duncan Usher / Lesser Whitethroat (Sylvia curruca) young male, Europe