Stephen Dalton / Hoverfly (Eristalis pertinax) male, Sussex, England, UK, August.

Stephen Dalton / Hoverfly (Eristalis pertinax) male. Sussex, England, UK, August.

Stephen Dalton / Hoverfly (Eristalis pertinax) male. Sussex, England, UK, August.

Stephen Dalton / Hoverfly (Eristalis pertinax) male. Sussex, England, UK, August.

Rod Williams / Tapered hoverfly (Eristalis pertinax) Lewisham, London, September

Rod Williams / Tapered hoverfly (Eristalis pertinax) feeding on nectar of Ivy flower, South London, UK, October

Rod Williams / Tapered hoverfly (Eristalis pertinax) feeding on nectar of Ivy flower, South London, UK, October

Pete Oxford / Brown-throated Parakeet (Aratinga pertinax) feeding on cactus flower, Bonaire, Netherlands Antilles, Caribbean

Pete Oxford / Brown-throated Parakeet (Aratinga pertinax) perching. Orinoco River, Apure Province, Venezuela / Colombia border.

Pete Oxford / Brown-throated Parakeet (Aratinga pertinax) perching. Orinoco River, Apure Province, Venezuela / Colombia border.

Pete Oxford / Brown-throated Parakeet (Aratinga pertinax), Orinoco River, north of Puerto Ayacucho, Apure, Venezuela

Nigel Bean / Hover fly (Eristalis pertinax) feeding on flower of {Echinacea purpurea} in UK garden, September