Nick Upton / Yellow dung fly (Scathophaga stercoraria) killed by pathogenic fungus of flies (Entomophthora muscae) clinging to a thistle leaf with wings spread, Wiltshire pastureland, UK, June.

Nick Upton / Male Yellow dung fly (Scathophaga stercoraria) on the look out for fly prey from a grass blade, Wiltshire meadow, UK, April.

Nick Upton / Male Yellow dung flies (Scathophaga stercoraria) waiting on sheep dung for females to arrive, with Mallards (Anas platyrhynchos) and a lake in the background, Wiltshire, UK, March.

Ernie Janes / Dung fly (Scathophaga stercoraria) on dung, Norfolk, UK July

Colin Varndell / Female Common yellow dung fly (Scathophaga stercoraria) resting on a Yellow flag iris (Iris pseudacorus) flower, Dorset, England, UK, June

Colin Varndell / Female Common yellow dung fly (Scathophaga stercoraria) resting on a Giant hogweed (Hercaleum mantegazziaum) flower, Dorset, England, UK, June

Andy Sands / Yellow Dung Fly (Scathophaga stercoraria) On sheep dung, Wales, UK, June

Andy Sands / Yellow Dung Fly (Scathophaga stercoraria) Mating pair on sheep dung, Wales, UK, June

Ernie Janes / Common Yellow Dung Fly (Scathophaga stercoraria) pair mating on dung, UK, April

Laurent Geslin / Mass of Yellow Dung Flies (Scathophaga stercoraria) feeding on cow dung with cows in the background, Switzerland, April

Nick Upton / Yellow Dung Fly (Scathophaga stercoraria) killed by pathogenic fungus of flies (Entomophthora muscae) clinging to vegetation with fungal fruiting bodies emerging from from its carapace. Wiltshire, UK,...

Nick Upton / Male Yellow Dung Fly (Scathophaga stercoraria) with fly prey on Alexanders (Smyrnium olusatrum) flowerhead. Cornwall, UK, April.

Nick Upton / Male Yellow Dung Fly (Scathophaga stercoraria)profile portrait on leaf, Cornwall, UK, April.

Nick Upton / Pair of Yellow Dung Flies (Scathophaga stercoraria) male guarding female as she lays eggs on cow pat. Wiltshire, UK, April.

Nick Upton / Yellow Dung Fly (Scathophaga stercoraria) portrait of male searching for female on a cow pat. Wiltshire, UK, April.

Nick Upton / Male Yellow Dung Fly (Scathophaga stercoraria) on Alexanders (Smyrnium olusatrum) flowerhead. Cornwall, UK, April.

Nick Upton / Male Yellow Dung Fly (Scathophaga stercoraria) guarding female, on a cow pat. Wiltshire, UK, April.

Nick Upton / Male Yellow Dung Fly (Scathophaga stercoraria) grappling with mating pair, attempting to dislodge a rival male. Wiltshire, UK, April.

Nick Upton / Male Yellow Dung Fly (Scathophaga stercoraria) approaching two mating pairs on a cow dung before attempting to dislodge a rival male. Wiltshire, UK, April.

Nick Upton / Yellow Dung Fly (Scathophaga stercoraria) male with unusual grey colouration, on Blackthorn blossom (Prunus spinosa) Wiltshire, UK, April.

Nick Upton / Bluebottle (Calliphora vicina) Greenbottle (Eudasyphora cyanella) and Yellow Dung Fly (Scathophaga stercoraria) feeding on Alexanders (Smyrnium olusatrum) flowerhead. Cornwall, UK, April.

Stephen Dalton / Yellow dung fly (Scatophaga stercoraria) taking off, multiflash sequence of three images, UK. Controlled conditions.

Stephen Dalton / Yellow dung fly (Scatophaga stercoraria) in flight, UK

Stephen Dalton / Yellow dung fly (Scathophaga stercoraria) mating pair on horse dung, UK

Stephen Dalton / Yellow dung flies (Scatophaga stercoraria) on horse dung, UK

Stephen Dalton / Yellow dungfly (Scathophaga stercoraria) taking off, multiflash sequence of three images, controlled conditions

Stephen Dalton / Yellow dung fly (Scathophaga stercoraria) with fly prey, UK

Stephen Dalton / Yellow dungfly {Scathophaga stercoraria} on Dandelion flower, UK

Stephen Dalton / Yellow dungfly {Scathophaga stercoraria} on Dandelion flower, UK

Andy Sands / Dung Fly (Scathophagia stercoraria) on cow dung, Captive, UK

Ross Hoddinott / Yellow dung fly {Scathophaga stercoraria} on unfurling frond of Hartstongue {Phyllitis scolopendrium} fern, Cornwall, UK. May

Silvia Reiche / Yellow Dung Fly (Scathophaga stercoraria) on Poppy (Papaver sp) with prey, Netherlands

Simon Colmer / Yellow dung fly (Scathophaga stercoraria) on leaf, UK

Premaphotos / Common yellow dung flies (Scathophaga stercoraria) mating and laying eggs on a cow-pat, UK

Russell Cooper / Yellow dungflies {Scathophagia stercoraria} pair mating, UK

Ross Hoddinott / Yellow dung-fly (Scatophaga stercoraria) Cornwall, UK

Premaphotos / Common yellow dung fly (Scathophaga stercoraria) females being guarded by their mates as they lay eggs in dung, UK

Premaphotos / Common yellow dung fly (Scathophaga stercoraria) male feeding on a Crane fly, UK

Premaphotos / Common yellow dung fly (Scathophaga stercoraria). An intruding male trying to unseat a male that is already mating on dung, UK

Premaphotos / Common yellow dung fly (Scathophaga stercoraria) male feeding on a hover fly (Syrphus ribesii) UK

Premaphotos / Common yellow dung fly (Scathophaga stercoraria) mating and laying eggs on a cow-pat, UK