Paul Bertner / Fly with compound eyes, Khao Yai National Park, Thailand

Solvin Zankl / Research scientist Dr. Anne von Philipsborn sorting a laboratory culture of Common fruit flies (Drosophila melanogaster) at the Vienna Drosophila RNAi Center, Institute for Molecular Pathology, Austri...

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

Warwick Sloss / Common bluebottle fly adult feeding close-up

Nick Upton / Face fly / Autumn house fly (Musca autumnalis) dusted with pollen feeding on a Forsythia flower, Wiltshire garden, UK, March.

Marie Read / Roseate spoonbill (Ajaia ajaja) adult in breeding plumage in flight over water, mangroves in background,Tampa Bay, Florida, USA, March.

Paul Bertner / Signal Fly (Bromophila caffra), Udzungwa Mountains National Park, Tanzania

Paul Bertner / Owl Fly (Ascalaphidae) larva, Amani Nature Reserve, Tanzania

Paul Bertner / Fly (Pipunculidae) pair mating, Antananarivo, Madagascar

Paul Bertner / Horse Fly (Tabanidae), Danum Valley Conservation Area, Sabah, Borneo, Malaysia

Paul Bertner / Stalk-eyed Fly (Diopsidae) female compound eyes, Mount Isarog National Park, Philippines

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