Michael Hutchinson / Marsh fritillary butterfly (Euphydryas aurinia) nectaring from a Buttercup (Ranunculus) before taking off, Devon, England, UK, June.

Michael Hutchinson / Marsh fritillary butterfly (Euphydryas aurinia) nectaring from a Buttercup (Ranunculus), Devon, England, UK, June.

Michael Hutchinson / Tilt shot down to a pair of Marsh fritillary butterflies (Euphydryas aurinia) mating in grass, Devon, England, UK, June.

Michael Hutchinson / Marsh fritillary butterflies (Euphydryas aurinia) taking off after nectaring from a Water forget-me not (Myosotis scorpioides) flower, Devon, England, UK, June.

Michael Hutchinson / Marsh fritillary butterfly (Euphydryas aurinia) nectaring from a Buttercup (Ranunculus) before taking off, Devon, England, UK, June.

Michael Hutchinson / Marsh fritillary butterfly (Euphydryas aurinia) nectaring from a Buttercup (Ranunculus) before taking off, Devon, England, UK, June.

Michael Hutchinson / Marsh fritillary butterfly (Euphydryas aurinia) nectaring from a Buttercup (Ranunculus) before taking off, Devon, England, UK, June.

Michael Hutchinson / Marsh fritillary butterfly (Euphydryas aurinia) nectaring from a Buttercup (Ranunculus), Devon, England, UK, June.

George Sanker / Painted lady (Vanessa cardui) butterfly nectaring. Acadia National Park, Maine, USA. September.

Paul Hobson / Slaty flower-piercer (Diglossa plumbea) opening base of flower and feeding. Costa Rica.

Paul Hobson / Purple-throated mountain-gem (Lampornis calolaemus) nectaring at flower. Costa Rica.

Paul Hobson / Marsh fritillary (Euphydryas aurinia) nectaring on Marsh thistle (Cirsium palustre). Lincolnshire, England, UK.

Paul Hobson / Leaf-nosed bat (Phyllostomidae sp) nectaring, approaching flower with tongue out. Costa Rica.

Paul Hobson / Leaf-nosed bat (Phyllostomidae sp), two, nectaring on and flying towards flower. Costa Rica.

Paul Hobson / Leaf-nosed bat (Phyllostomidae sp) flying towards flower to feed. Costa Rica.

Paul Hobson / Leaf-nosed bat (Phyllostomidae sp) nectaring on flower. Costa Rica.

Paul Hobson / Leaf-nosed bat (Phyllostomidae sp) flying towards Banana (Musa sp) flower to feed. Costa Rica.

Paul Hobson / Leaf-nosed bat (Phyllostomidae sp) nectaring on Orchid (Orchidaceae sp). Costa Rica.

Paul Hobson / Green violetear (Colibri thalassinus) hummingbird nectaring on Fuchsia (Fuchsia sp) flower. Costa Rica.

Paul Hobson / Broad bordered bee hawk moth (Hemaris fuciformis) nectaring on Ragged robin (Silene flos-cuculi). Lincolnshire, England, UK.

Paul Hobson / Broad bordered bee hawk moth (Hemaris fuciformis) nectaring on Ragged robin (Silene flos-cuculi). Lincolnshire, England, UK.

Paul Hobson / Volcano hummingbird (Selasphorus flammula) nectaring on flower. Costa Rica.

Edwin Giesbers / Clouded yellow butterfly (Colias crocea) nectaring on Mayweed (Anthemis sp) flower. Cyprus. April.

Kerstin Hinze / Painted lady (Vanessa cardui) nectaring, Bavarian Forest National Park, Germany, June.

Kerstin Hinze / Painted lady (Vanessa cardui) nectaring, with a Common brimstone (Gonepteryx rhamni) flying past, Bavarian Forest National Park, Germany, June.

Kerstin Hinze / Greater bee fly (Bombylius) nectaring from Butterbur (Petasites hybridus) flowers, Bavarian Forest National Park, Germany, April.

Kerstin Hinze / Greater bee fly (Bombylius) nectaring from Butterbur (Petasites hybridus) flowers, Bavarian Forest National Park, Germany, April.

Kerstin Hinze / Greater bee fly (Bombylius) nectaring from Butterbur (Petasites hybridus) flowers, Bavarian Forest National Park, Germany, April.

Nick Upton / Common wasp (Vespula vulgaris) nectaring on Ivy flowers, Wiltshire garden, UK, September.

Nick Upton / Thick-legged hoverfly (Syritta pipiens) nectaring on Common fleabane (Pulicaria dysenterica), Dorset, UK, July.

Nick Upton / Small skipper butterfly (Thymelicus sylvestris) nectaring on a Greater knapweed flower (Centaurea scabiosa) in a meadow, Green Lane Wood, Wiltshire, UK, July.

Nick Upton / Red Admiral butterfly (Vanessa atalanta) nectaring on Ivy flowers (Hedera helix) in a garden, Wiltshire, UK, October.

Philippe Clement / Large white butterfly (Pieris brassicae) nectaring from a Buddleia (Buddleja davidii) flower, Pyrenees, France.

Philippe Clement / Hummingbird hawk-moth (Macroglossum stellatarum) in flight, nectaring from Buddleia (Buddleja davidii) flower, Pyrenees, France, Sepetember.

Philippe Clement / Large white butterfly (Pieris brassicae) and Hummingbird hawk-moth (Macroglossum stellatarum) in flight, nectaring from Buddleia (Buddleja davidii) flower, Pyrenees, France, Sepetember.

Philippe Clement / Tachina flies (Tachina fera) nectaring on Umbellifer (Apiaceae) flowers in summer, Luxembourg, August.

Dave Bevan / Six spot burnet (Zygaena filipendulae) nectaring on a Cornflower (Centaurea cyanus), Norfolk, England, UK, July.

Colin Varndell / Portrait of a Painted lady butterfly (Vanessa cardui) wings closed, on buddleia, Dorset, UK September 2016

Staffan Widstrand / Wild Wonders of China / Butterfly (Papilio sp) sitting on pink blossoms, East Lake Greenway park, Wuhan, Hubei, China

Kerstin Hinze / Black-veined white butterfly (Aporia crataegi) feeding on Thistle (Cirsium sp). Bavarian Forest National Park, Bavaria, Germany. June.

Magnus Lundgren / Wild Wonders of China / Common leopard / Spotted rustic butterfly (Phalanta phalantha) feeding on thistle. Wuliangshan Nature Reserve, Jingdong, Yunnan Province, China.

Magnus Lundgren / Wild Wonders of China / Common leopard / Spotted rustic butterfly (Phalanta phalantha) feeding on thistle. Wuliangshan Nature Reserve, Jingdong, Yunnan Province, China.

Konrad Wothe / Slow motion clip of a Blue butterfly (Lycaenidae) flying and nectaring on Purple loosestrife (Lythrum salicaria), Bavaria, Germany, July.

Konrad Wothe / Slow motion clip of a Blue butterfly (Lycaenidae) flying and nectaring on Purple loosestrife (Lythrum salicaria), disturbed by a Skipper (Thymelicus), Bavaria, Germany, July.

Konrad Wothe / Slow motion clip of a male Brimstone butterfly (Gonepteryx rhamni) nectaring on Purple betony (Betonica officinalis) before taking off, Bavaria, Germany, July.

Konrad Wothe / Slow motion clip of a Marbled white butterfly (Melanargia galathea) chasing a Meadow brown (Maniola jurtina) from a Knapweed (Centaurea) flower, Bavaria, Germany, July.

Konrad Wothe / Slow motion clip of a Meadow brown butterfly (Maniola jurtina) nectaring on a Knapweed (Centaurea) flower with a Bumblebee (Bombus), Bavaria, Germany, July.

Konrad Wothe / Slow motion clip of Ringlet (Aphantopus hyperantus) nectaring on a Knapweed (Centaurea) flower with a Fritillary (Melitaea), distrubed by another, Bavaria, Germany, July.