Simon Colmer / Blue bottle fly (Calliphora vicina) lying upside down, dead, on white background, Sussex, UK

Heidi & Hans-Juergen Koch / Blue Bottle Fly (Calliphora erythrocephala) flying, worldwide distribution

Heather Angel / Blowfly (Calliphora sp) nectaring on Common rue (Ruta graveolens). Surrey, England, UK. July.

Rod Williams / Bluebottle fly (Calliphora vomitoria) on ivy leaf, showing blue abdomen. Beverley Court Gardens, Lewisham, England, November

Andy Sands / Spotted flycatcher (Muscicapa striata) perched with Blue bottle fly prey, Upper Teesdale, Co Durham, England, UK, June

Andy Sands / Spotted Flycatcher (Muscicapa striata) perched with Blue bottle fly prey, Upper Teesdale, Co Durham, England, UK, June

Paul Bertner / Blue Bottle Fly (Bengalia sp), Ankarafantsika National Park, Madagascar

Adrian Davies / Bluebottles (Calliphora sp.) trapped in the sticky tendrils of a Flycatcher bush (Roridula gorgonias), Kew Botanic Gardens, UK. Occurs in South Africa.

Michael Durham / Blue Bottle Fly (Calliphoridae) feeding on flower nectar, western Oregon

Christian Ziegler / Orchid (Masdevallia caloptera) flower with its pollinator Blue Bottle Fly (Calliphoridae) carrying yellow pollinium on its back, Finca Dracula Orchid Sanctuary, western Panama

Chien Lee / Blue Bottle Fly (Calliphoridae) emerging from a Rafflesia (Rafflesia tuan-mudae) flower with pollen stuck to its back, Gunung Braang, Padawan, Malaysia

Michael Durham / Blue Bottle Fly (Calliphoridae) lands on the pelage of a dead Townsend's Mole while another is already feeding. These flies are attracted to the odor of the decaying animal