Pete Oxford / Caribbean Parakeet or Brown-throated Parakeet (Aratinga pertinax xanthogenia) Bonaire, Netherlands Antilles, Caribbean

Kim Taylor / Male hoverfly hovering {Eristalis sp.} Europe.

Murray Cooper / Brown-throated Parakeet (Aratinga pertinax) emerging from termite nest cavity, South America

Glenn Bartley/ BIA / Brown-throated Parakeet (Aratinga pertinax), Guyana

Glenn Bartley/ BIA / Brown-throated Parakeet (Aratinga pertinax), Guyana

Will Watson / Tapered dronefly (Eristalis pertinax), female on Ivy flower (Helix hedera), Herefordshire Plateau, England, UK, November.

Dave Bevan / European hoverfly (Eristalis pertinax) nectaring on a dahlia flower, Carmarthenshire, Wales, UK. September.

Alex Hyde / Tapered drone fly (Eristalis pertinax) on Ivy (Hedera helix) flowers. Peak District National Park, Derbyshire, UK, November.

Alan Williams / Hoverfly (Eristalis pertinax) feeding on Bramble (Rubus fruticosus) flower at edge of woodland Cheshire, England, UK, July.

Rod Williams / Hoverfly (Eristalis pertinax) on leaf, Brockley cemetery, Lewisham, London, UK, October.

Rod Williams / Female tapered hoverfly (Eristalis pertinax) Showing ovipositor Brockley cemetery.Lewisham, London, England, UK. April

Rod Williams / Hoverfly (Eristalis pertinax) Hutchinson's Bank, New Addington, South London, England, UK, April