Wild Wonders of Europe / Geslin / Yellow-legged moustached icon hoverfly (Syrphus ribesii) resting on leaf in the Vatican garden with St Peter's in the background, Rome, Italy, March 2010

Wild Wonders of Europe / Geslin / Yellow-legged moustached icon hoverfly (Syrphus ribesii) on leaf in garden of Vatican City, Rome, Italy, March 2010

Ashley Cooper / Big green Footsteps sign on Eigg Harbour, Scotland, UK. May 2012

Ashley Cooper / The Thames barrier designed to protect the capital from storm surge flooding, London, England, UK. May 2007

Ashley Cooper / The Houses of Parliament and Big Ben with a bus crossing Westminster Bridge, London, UK. April 2013

Ashley Cooper / Tulip fields and wind farm and tulip fields near Almere, Flevoland, Netherlands. May 2013

Ashley Cooper / Wind turbines beneath An Sgurr, Isle of Eigg. Isle of Eigg produces all the energy the island needs from renewable energy. Eigg, Scotland, UK, May.

Ashley Cooper / Four wind turbines beneath An Sgurr, Isle of Eigg. Isle of Eigg produces all the energy the island needs from renewable energy. Eigg, Scotland, UK, May.

Ashley Cooper / Ratcliffe on Soar, a massive coal powered power station in Nottinghamshire, with field of oilseed rape in foreground, UK, May 2008.

Ashley Cooper / Water vapour from cooling towers at Ratcliffe on Soar massive coal powered power station, Nottinghamshire, England, UK, April 2008.

Rod Williams / Hoverfly (Eupeodes luniger) female, Sutcliffe Park Nature Reserve, Eltham, London, England, UK. September.

Rod Williams / Hoverfly (Eupeodes luniger) grooming its face, Beverley Court Gardens, Lewisham, London, England, UK April.

Dave Bevan / Hoverfly (Syrphus ribesii) nectaring on dahlia flower, Carmarthenshire, Wales, UK. September.

Alex Hyde / Hoverfly (Syrphus ribesii) feeding on Ivy (Hedera helix) flowers. Peak District National Park, Derbyshire, UK, November.

Alex Hyde / Hoverfly (Syrphus ribesii) Nordtirol, Austrian Alps, July.

Nick Upton / Hoverfly (Syrphus ribesii) grooming its head with its front feet, Wiltshire, England, UK, April.

Nick Upton / Hoverfly (Eupeodes luniger) feeding on a flowering Cabbage tree / Torquay palm (Cordyline australis) in a garden planted with flowers to attract pollinators, Dungeness, Kent, UK.

Rod Williams / Hoverfly (Eupeodes luniger) feeding on Ragwort (Senecio jacobaea) Brockley Cemetery, Lewisham, London, UK. August.

Nick Upton / Male Hoverfly (Syrphus ribesii) hovering above a Greater knapweed (Centaurea scabiosa) flower in a chalk grassland meadow, Wiltshire, UK, July.

Nick Upton / Female Hoverfly (Syrphus ribesii) female feeding on a Greater knapweed (Centaurea scabiosa) flower in a chalk grassland meadow, Wiltshire, UK, July.

Will Watson / Docklow hoverfly (Eupeodes corellae) on leaf, England, UK, July.

Rod Williams / Female Hoverfly (Eupeodes luniger) on leaf, Brockley, Lewisham, London, England, April.

Chris Mattison / Hoverfly (Syrphus ribesii) male, feeding on honeydew, Derbyshire, England, UK.

Chris Mattison / Hoverfly (Syrphus ribesii) male, feeding on honeydew, Derbyshire, England, UK.

Chris Mattison / Hoverfly (Syrphus ribesii) male, feeding on honeydew, Derbyshire, England, UK.

Bruno D'Amicis / Fennec fox mascot, Labib, the Tunisian symbol for environmental protection in the country for years. Regarded as a symbol of Ben Ali's regime, Labib's campaign has now been abandoned and the icon van...

Enrique Lopez-Tapia / Christian priests. Bet Medhane Alem Complex (part of the northwestern group of churches in Lalibela). UNESCO World Heritage Site. Lalibela. Ethiopia, December 2014.

Rod Williams / Female Hoverfly (Eupeodes luniger) Feeding on cow parsley, Brockley cemetery, Lewisham, London, England, UK. May

Alex Hyde / A German Wasp (Vespula germanica) compared to five Batesian mimics. None of the five wasp mimics can sting, but by appearing similar to a wasp, are avoided by many potential predators. All five mimics...

Stephen Dalton / Hoverfly (Syrphus vitripennis) on flower, Sussex, England, UK, August.

Stephen Dalton / Hoverfly (Syrphus vitripennis) Sussex, England, UK, August.

Stephen Dalton / Hoverfly (Syrphus vitripennis) Sussex, England, UK, September.

Stephen Dalton / Hoverfly (Volucella inanis) Sussex, England, UK, August.

Rod Williams / Hoverfly (Eupeodes corollae) on buttercup flower, Lewisham, London, UK, June.

Cheryl-Samantha Owen / Ankole cattle, cultural icon for the traditionally nomadic Bahima people of Uganda, outside Lake Mburu National Park, Uganda, East Africa. After years of disputes between neighbouring communities and...

Rod Williams / Hoverfly (Syrphus ribesii) feeding on nectar of Ivy flower, South London, UK, October

Rod Williams / Hoverfly (Syrphus ribesii) feeding on nectar of Ivy flower, South London, UK, October

Rod Williams / Hoverfly (Syrphus ribesii) feeding on nectar of Ivy flower, South London, UK, October

Nick Upton / Hoverfly (Syrphus vitripennis) feeding on Weeping Willow catkin (Salix sp.) Wiltshire garden, UK, April.

Wild Wonders of Europe / Geslin / Yellow-legged moustached icon hoverfly (Syrphus ribesii) resting on plant in the Vatican garden with St Peter's in the background, Rome, Italy, March 2010

Wild Wonders of Europe / Geslin / Yellow-legged moustached icon hoverfly (Syrphus ribesii) resting on leaf in the Vatican garden with St Peter's in the background, Rome, Italy, March 2010

PREMAPHOTOS / Group of yellow-legged moustached Icon hover Flies (Syrphus ribesii) on Hogweed flowers with the worker wasp they mimic, UK

Igor Shpilenok / Pilgrimage, worshippers take the icon of John the Baptist to a monastery, Russia.

Igor Shpilenok / Pilgrimage, worshippers take the icon of John the Baptist to a monastery, Bryansky, Russia.

Jabruson / Human femur bones of Tutsi victims with Christian icon, genocide memorial, Ntarama church, Nyamata, Rwanda

Gavin Hellier / The Little Mermaid statue, the icon of Copenhagen, Denmark

Gavin Hellier / The Little Mermaid statue, the icon of Copenhagen, Denmark

Paul D Stewart / 1806 'Kangaroo' (Macropus giganteus), a copper engraving of a keeper attempting to box a kangaroo. First image of a boxing kangaroo, now an australian national icon. From Thomas Smith, 'The Naturalist...

Paul D Stewart / Illustration of Indian/Asian Rhinoceros (Rhinoceros unicornis), Gesner Woodcut from 'Icones Animalium' 1560, reproduced from 1551. Published Christoph Froschover, Zurich. Gesner reproduces this image...

Premaphotos / Yellow-rimmed icon hover fly (Metasyrphus corollae) flying between two Sweet William flowers in a garden, UK

Premaphotos / Yellow-legged moustached icon male hoverfly (Syrphus ribesii) (bottom), Marmalade icon hover fly (Episyrphus balteatus) (top left) and Lesser drone fly (Eristalis arbustorum), UK

Premaphotos / Lunar icon hoverfly (Metasyrphus luniger) male (left) and female on a cactus flower in a greenhouse, UK

Premaphotos / Yellow-legged moustached icon female hover fly (Syrphus ribesii) (left), Marmalade icon hoverfly (Episyrphus balteatus) (right), on Marigold flower in a garden, UK

Premaphotos / Marmalade icon hoverfly (Episyrphus balteatus) male alongside Micro moth (Anthophila fabriciana) on Marigold flower in a garden, UK

Premaphotos / Clear-winged moustached icon hover fly (Syrphus vitripennis) on a bramble flower, UK

Premaphotos / Meadow icon hover fly (Metasyrphus latifasciatus) on Common fleabane flower, UK

Premaphotos / Hover flies on Bramble flower: Marmalade icon hover fly (Episyrphus balteatus) in flight, Banded narrow icon hover fly (Meliscaeva cinctella) on right and Meadow tear hover fly (Melanostoma melinum) o...

Premaphotos / Flamboyant false icon hover fly (Xanthogramma pedissequum) UK

Premaphotos / Yellow-rimmed icon hover fly (Metasyrphus corollae) on flower, UK

Premaphotos / Marmalade icon hover fly (Episyrphus balteatus) males and females on Dandelion flower, UK

Premaphotos / Marmalade icon hover fly (Episyrphus balteatus) female flying to Dandelion flower, UK

Premaphotos / Flamboyant false icon hover fly (Xanthogramma pedissequum) UK

Premaphotos / Yellow-legged moustached icon hover fly (Syrphus ribesii) feeding from apple blossom, UK

Premaphotos / Yellow-rimmed icon hover fly (Metasyrphus corollae) female laying her eggs amongst Lupin aphids, on which her larvae will prey, UK

Nick Upton / Lesser banded hoverfly (Syrphus vitripennis) nectaring on a Greater knapweed (Centaurea scabiosa) flowerhead in chalk grassland meadow, Wiltshire, England, UK. July.

Paul Harcourt Davies / Common flower fly (Syrphus ribesii) resting on California poppy (Eschscholzia californica), Podere Montecucco, Orvieto, Umbria, Italy. May.

Chris Mattison / Hoverfly (Syrphus ribesii) male, a wasp mimic, resting on leaf with small bugs.

Phil Savoie / Banded hoverfly (Syrphus ribesii), in flight, Monmouthshire, Wales, UK, July.

Alan Williams / Hoverfly (Syrphus ribesii) feeding on Cosmos (Cosmos bipinnatus) flower in garden, Cheshire, UK, June.

Nick Upton / Hoverfly (Eupeodes corollae) nectaring on an Oxeye daisy / Marguerite (Leucanthemum vulgare) in a conservation flower border around an arable crop, Wiltshire, UK, July.

Rod Williams / Hoverfly (Syrphus vitripennis) female, Beverley Court Gardens, Lewisham, London, England, UK. April.