Jussi Murtosaari / Peacock butterfly (Inachis io) newly emerged on asters, Jyvaskyla, Finland, August.

Alex Hyde / Peacock butterfly (Inachis io) feeding on Goat Willow catkins (Salix caprea), an important food source for pollinators in early spring. Peak District National Park, UK. April.

Alex Hyde / Peacock butterfly (Inachis io) basking with open wings on a white background in mobile field studio. Peak District National Park, Derbyshire, UK. August

Jussi Murtosaari / Peacock Butterfly (Inachis io) closeup of wings, South Karelia, southern Finland, September.

Paul Harcourt Davies,Paul Harcourt Davies / Peacock butterfly (Inachis io) resting against a wood shed window, Orvieto, Italy, June

Nigel Cattlin / Peacock butterfly (Inachis io) last instar caterpillar feeding on Stinging nettle (Urtica dioica) food plant.

Robert Thompson / Peacock (Aglais io) Brackagh Moss NNR, Portadown, Co. Armagh, Northern Ireland. July

Laurie Campbell / Peacock butterfly (Inachis io) larva feeding on stinging nettle, Berwickshire, Scotland, July 2008

Laurie Campbell / Peacock butterfly (Inachis io) larva feeding on stinging nettle, Berwickshire, Scotland, July 2008

Ernie Janes / Peacock butterflies (Inachis io) resting on Ice plant (Sedum spectabile) England, UK.

Ernie Janes / Peacock butterflies (Inachis io) feeding on corn marigolds (Glebionis segetum) on agricultural headland. England, UK.

Ernie Janes / Peacock butterfly (Inachis io) buddleia in garden. England, UK.

Lorraine Bennery / Peacock butterfly (Inachis io), Ain, France, September.

Sue Daly / Peacock butterfly (Inachis io), Sark, Channel Islands, Sept 2011

Stephen Dalton / Peacock butterfly (Aglais io) flying over ivy flowers Sussex, England, UK. October.

Dave Bevan / Peacock butterfly (Aglais io) nectaring on a Buddliea (Buddleja) flower, Carmarthenshire, Wales, UK. September.

Nick Upton / Close up view of a Peacock butterfly (Inachis io) nectaring on a Bramble flower (Rubus plicatus) on a woodland edge, Lower Woods Gloucestershire Wildlife Trust reserve, Gloucestershire, England, UK, J...

Nick Upton / Close up view of a Peacock butterfly (Inachis io) nectaring on a Bramble flower (Rubus plicatus) on a woodland edge, Lower Woods Gloucestershire Wildlife Trust reserve, Gloucestershire, England, UK, J...

Nick Upton / Close up view of a Peacock butterfly (Inachis io) nectaring on a Bramble flower (Rubus plicatus) on a woodland edge, Lower Woods Gloucestershire Wildlife Trust reserve, Gloucestershire, England, UK, J...

Nick Upton / Close up view of a Peacock butterfly (Inachis io) nectaring on a Bramble flower (Rubus plicatus) on a woodland edge, Lower Woods Gloucestershire Wildlife Trust reserve, Gloucestershire, England, UK, J...

Nick Upton / Close up view of a Peacock butterfly (Inachis io) nectaring on a Bramble flower (Rubus plicatus) on a woodland edge, Lower Woods Gloucestershire Wildlife Trust reserve, Gloucestershire, England, UK, J...

Nick Upton / Close up view of a Peacock butterfly (Inachis io) nectaring on a Bramble flower (Rubus plicatus) before flying off, Lower Woods Gloucestershire Wildlife Trust reserve, Gloucestershire, England, UK, Ju...

Nick Upton / Close up view of a Peacock butterfly (Inachis io) nectaring on a Bramble flower (Rubus plicatus) before flying off, Lower Woods Gloucestershire Wildlife Trust reserve, Gloucestershire, England, UK, Ju...

Constantinos Petrinos / European Peacock butterfly (Inachis io) Menen, Belgium, September.

Constantinos Petrinos / European Peacock butterfly (Inachis io) feeding on flower, Menen, Belgium, September.

Russell Cooper / Peacock butterfly (Inachis io) female egg laying on the underside of a nettle leaf, Southwest London, England, UK, May.

Russell Cooper / Peacock butterfly (Inachis io) basking on fallen tree, Southwest London, England, UK, April.

MYN / Dirk Funhoff / Peacock butterfly (Inachis io) pupa, Lorsch, Hessen, Germany. Meetyourneighbours.net project.

MYN / Dirk Funhoff / Peacock butterfly (Inachis io), Lorsch, Hessen, Germany. Meetyourneighbours.net project.

MYN / Dirk Funhoff / Peacock butterfly (Inachis io), Lorsch, Hessen, Germany. Meetyourneighbours.net project.

MYN / Dirk Funhoff / Peacock butterfly (Inachis io) pupa, Lorsch, Hessen, Germany. June. Meetyourneighbours.net project

Loic Poidevin / Comma butterfly (Aglais io) on aster flower, Vendee, France, Augst.

Bernard Castelein / Peacock butterflly (Inachis io) caterpillar, Lauwersmeer, the Netherlands, July.

Alex Hyde / Peacock butterfly (Inachis io) feeding on Goat Willow catkins (Salix caprea), an important food source for pollinators in early spring. Peak District National Park, UK. April.

Alex Hyde / Peacock butterfly (Inachis io) feeding on Goat Willow catkins (Salix caprea), an important food source for pollinators in early spring. Peak District National Park, UK. April.

Alex Hyde / Peacock butterfly (Inachis io) feeding on Goat Willow catkins (Salix caprea), an important food source for pollinators in early spring. Peak District National Park, UK. April.

David Kjaer / Peacock butterfly (Inachis io) caterpillars feeding on Nettle (Urtica dioca) Greylake RSPB Reserve, Somerset, UK, June.

Ernie Janes / Peacock butterfly (Inachis io) left, and Small Tortoishell (Aglais urticae) resting on ice plant. Norfolk, England, UK. July.

Alex Hyde / Devil's-bit scabious (Succisa pratensis) and Peacock butterfly (Inachis io) Peak District National Park, Derbyshire, UK, September. Digital composite.

Alex Hyde / Devil's-bit scabious (Succisa pratensis) and Peacock butterfly (Inachis io) Peak District National Park, Derbyshire, UK, September. Digital composite.

Jussi Murtosaari / Peacock butterfly (Nymphalis io) two caterpillars on nettle leaf, Finland. July

Alan Williams / Peacock butterfly (Aglais io) on Creeping thistle (Cirsium arvense) Cheshire, UK, August.

Alex Hyde / Peacock Butterfly caterpillars (Inachis io) in silk tent feeding on Stinging Nettle (Urtica dioica). Peak District National Park, Derbyshire, UK. June.

Alex Hyde / Peacock butterfly (Inachis io) feeding on Field Scabious (Knautia arvensis) in a disused limestone quarry. Peak District National Park, Derbyshire, UK. August.

Chris Mattison / Peacock butterfly caterpillars (Inachis io) on stinging nettle, Derbyshire, England, UK May.

Paul Harcourt Davies / Peacock butterfly (Inachis io) underside view, Orvieto, Umbria, Italy.

Alex Hyde / Peacock Butterfly caterpillar (Inachis io) feeding on Stinging Nettle (Urtica dioica). Derbyshire, UK. September.

Robin Chittenden / European Peacock butterfly (Inachis io) on buddleia, Suffolk, England, UK, August.

Stephen Dalton / Peacock butterfly (Inachis io) feeding on water mint. Sussex, England, UK, August.

Nick Upton / Peacock (Inachis io) and Comma (Polygonium c-album) butterflies feeding on Buddleia / Butterfly bush flowers (Buddleja davidii), Wiltshire garden, UK, September.

Alex Hyde / Peacock butterfly (Inachis io) newly emerged from hibernation, basking with open wings in spring sunshine. Peak District National Park, Cheshire, UK, May.

Ernie Janes / Small tortoiseshell butterfly (Aglais urticae) and Peacock butterfly (Inachis io) feeding on Common fleabane (Pulicaria dysenterica) England, UK, August.

Ernie Janes / Coneflower (Echinacea purpurea 'rubinstern') with feeding Peacock butterfly (Inachis io) in garden, England, UK, August

Jussi Murtosaari / Peacock butterfly (Inachis io) with an ant, Finland, July.

Jussi Murtosaari / Peacock Butterfly (Inachis io) on willow by lake, Finland, May.

Jussi Murtosaari / Peacock Butterfly (Inachis io) on buttercup, ventral view, showing duller side, central Finland, May.

Adrian Davies / Peacock Butterfly (Inachis io) larvae on Nettle (Urtica) Surrey, England.

MYN / Tim Hunt / Peacock butterfly (Inachis io) Barnt Green, Worcestershire, UK, July. Meetyourneighbours.net project

Jussi Murtosaari / Peacock butterfly (Aglais io) in flight over wildflowers, Finland. May.

Konrad Wothe / European peacock butterfly (Inachis io) caterpillar feeding on stinging nettles, Bavaria, Germany. August.

Nick Upton / Peacock (Aglais io) butterfly nectaring on Hemp agrimony (Eupatorium cannabinum) flowers, Strumble Head, Pembrokeshire, Wales, UK. August.

Paul Harcourt Davies / Eye scales of Peacock butterfly (Nymphalis io) captured under low power on a mciroscope and stacked. March.

Adrian Davies / Peacock butterfly (Inachis io) caterpillars clustered on Stinging nettle (Urtica dioica) Surrey, UK. June.

Adrian Davies / Peacock butterfly (Inachis io) caterpillars clustered on Stinging nettle (Urtica dioica) Surrey, UK. June.

Kim Taylor / Peacock butterfly (Aglais io) caterpillar suspending itself from a silk pad by its rear prolegs before shedding its larval skin and emerging as a pupa, June.

Nick Upton / Peacock butterfly (Inachis io) newly emerged caterpillars feeding in a dense group on Common nettle (Urtica dioica) leaves with remains of silk tents they hatched from visible, Wiltshire, UK, June.

Nick Upton / Peacock butterfly (Inachis io) newly emerged caterpillars feeding in a dense group on Common nettle (Urtica dioica) leaves with remains of silk tents they hatched from visible, Wiltshire, UK, June.

Ernie Janes / Peacock butterflies (Aglais io) feeding on Echinops , Norfolk, England, UK, July.

Andy Rouse / Peacock butterfly (Aglais io) feeding Wales, UK, July.

Nigel Cattlin / Peacock butterfly (Aglais io) caterpillars feeding on stinging nettle (Urtica dioica) leaves, Berkshire, England, UK, June

Nigel Cattlin / Peacock butterfly (Aglais io) caterpillars feeding on stinging nettle (Urtica dioica) leaves, Berkshire, England, UK, June

Nigel Cattlin / Peacock butterfly (Aglais io) caterpillars feeding on stinging nettle (Urtica dioica) leaves, Berkshire, England, UK, June

Jussi Murtosaari / Peacock butterfly (Aglais io) flying over flowers. Finland. August.

Paul Harcourt Davies / Eye scales of Peacock butterfly (Nymphalis io) Orvieto, Umbria, Italy.

Gary K. Smith / Peacock butterfly (Aglais io) hibernating in garden shed. Norfolk, England, UK. December.

Rod Williams / Peacock butterfly (Aglais io) Sutcliffe Park Nature Reserve, Eltham, London, England, UK. May

Robert Pickett / Peacock Butterfly (Inachis io) in flight through Butterfly Bush flowers (Buddleia), UK

Robert Pickett / Peacock Butterfly (Inachis io) low angle view, showing underside of wings and legs, in flight through Butterfly Bush flowers (Buddleia) UK.

Robert Pickett / Peacock Butterfly (Inachis io) emerging from chrysalis, UK

Robert Pickett / Peacock Butterfly (Inachis io) chrysalis on Stinging Nettle leaf, UK