James Dunbar / Timelapse of a Tiger longwing (Heliconius hecale) forming a chrysalis. Controlled conditions. Native to South and Central America.

James Christensen / False Zebra Longwing (Heliconius atthis) butterfly, Hacienda San Vicente, Mindo, Ecuador

Thomas Marent / Crimson-patched Longwing (Heliconius erato) butterfly, Colombia

Luiz Claudio Marigo / Butterfly {Heliconius erato amazona} Serra dos Carajas, Brazil

Luiz Claudio Marigo / Blue grecian butterfly sucking water from soil {Heliconius wallacei} Brazil

Michael & Patricia Fogden / Passionvine Butterfly (Heliconius clysonimus) attempting to feed at Crucifix Orchid (Epidendrum radicans) the original mimics Lantana sp and Asclepias curassavica but provides no nectar

Michael & Patricia Fogden / Tiger Longwing (Heliconius hecale) butterfly at Lantana flowers, Costa Rica

Thomas Marent / Heliconius Butterfly (Heliconius heurippa), Santa Maria, Colombia

Rod Williams / Red or Small postman (Heliconius erato) feeding on milkweed, Central and South America.

Paul Bertner / Heliconius Butterfly (Heliconius sp) emerging from chrysalis, Mount Kinabalu National Park, Sabah, Borneo, Malaysia

Angelo Gandolfi / Sara longwing (Heliconius sara fulgidus) on leaf. Corcovado National Park, Costa Rica. March.

Angelo Gandolfi / Red postman butterfly (Heliconius erato) (above) and Tiger longwing (Heliconius hecale) La Paz Waterfall Gardens, Costa Rica.

Ingo Arndt / Ismenius longwing butterfly (Heliconius ismenius), South America (Captive)

Ingo Arndt / Egg of Heliconius butterfly (Heliconius sp) attached to tendril of Passion plant, South America

Nick Hawkins / Tiger longwing butterfly (Heliconius hecale) photographed on white background, Costa Rica.

Nick Hawkins / Small postman butterfly (Heliconius erato) photographed on white background, Costa Rica.

Doug Wechsler / Sara longwing (Heliconius sara) Province El Oro, Buenaventura Biological Reserve, Ecuador

SCOTLAND: The Big Picture / Mosaic of agricultural land, forestry and moorland at sunrise, Aberdeenshire, Scotland, UK, December 2015.

Pete Oxford / Heliconius Butterfly (Heliconius sp), Mindo Cloud Forest, Ecuador

Pete Oxford / Heliconius Butterfly (Heliconius sp), Mindo Cloud Forest, Ecuador

Pete Oxford / Heliconius Butterfly (Heliconius sp), Mindo Cloud Forest, Ecuador

Pete Oxford / False Zebra Longwing (Heliconius atthis) butterfly, Mindo Cloud Forest, Ecuador

Loic Poidevin / Red postman butterfly (Heliconus erato) on leaf, captive, occurs in the Americas.

Loic Poidevin / Cydno longwing (Heliconus cydno) captive, occurs in the Americas.

Loic Poidevin / Postman butterfly (Heliconius melpomene) captive, occurs in the Americas.

Adrian Davies / Zebra butterfly (Heliconius charithonia) on flower, captive, occurs in the Americas.

James Christensen / False Zebra Longwing (Heliconius atthis) butterfly, Hacienda San Vicente, Mindo, Ecuador

Adrian Davies / Postman butterfly (Heliconius melpomene), Butterfly farm, Captive. Occurs in Central and South America.

Loic Poidevin / Two Postman butterflies (Heliconius melpomene) mating, captive, native to Brazil.

Denis-Huot / Sara Longwing Butterflies (Heliconius sara) with wings closed, Hacienda Baru, Costa Rica

Denis-Huot / Tiger longwing blutterfly (Heliconius hecale) Hacienda Baru, Costa Rica

Denis-Huot / Tiger longwing butterfly (Heliconius hecale) on leaf with coiled proboscis, Hacienda Baru, Costa rica

Stephen Dalton / Sapho heliconid (Heliconius sapho) in flight. Controlled condiitons, from Central America

Paul D Stewart / Tiger complex mimics, (Heliconids), an old collection of butterflies in the famous 'tiger complex'. This is a group of around 200 species of mostly toxic South American species which share a similar p...

Steve Gettle / Crimson-patched Longwing (Heliconius erato) butterfly pair, Ecuador

Adrian Davies / Tiger longwing butterfly (Heliconius hecale) captive, from central / south america

Christian Ziegler / Left to right, from top: Nymphalid Butterfly (Mechanitis sp), Orange-spotted Tiger Clearwing (Mechanitis polymnia), Nymphalid Butterfly (Hyposcada sp), Tiger Heliconian (Heliconius ismenius), Nymphali...

Christian Ziegler / Crucifix Orchid (Epidendrum radicans) flower mimicking milkweed to attract Heliconius Butterfly (Heliconius sp), Gamboa, central Panama

Christian Ziegler / Heliconius Butterfly (Heliconius sp) carrying pollinia on its proboscis, Gamboa, central Panama

Mark Moffett / Heliconius Butterfly (Heliconius eratonia) feeding on nectar of Hot Lips (Psychotria poeppigiana) blossom, Panama

Pete Oxford / Sara Longwing (Heliconius sara) chrysalis, Iwokrama Rainforest Reserve, Guyana

Stephen Dalton / Postman buttefly (Heliconius melpomene) at rest on leaf

Stephen Dalton / Heliconius butterfly (Heliconius antiochus) resting on the ground, wings closed

Stephen Dalton / Zebra longwing butterfly (Heliconius charithonia) in flight, controlled conditions

Murray Cooper / Heliconius Butterfly (Heliconius sp) silhouette

Fabio Liverani / Numata longwing butterflies {Heliconius numata} feeding on flower in rainforet, Tambopata National reserve, Amazonia, Peru

Thomas Marent / Blue Longwing Butterfly (Heliconius cydno) pair mating, Colombia

Thomas Marent / Blue Longwing Butterfly (Heliconius cydno), Colombia

Thomas Marent / Blue Longwing Butterfly (Heliconius cydno) caterpillar, Colombia

Edwin Giesbers / Heliconia butterfly (Heliconius sp.) showing proboscis, Costa Rica

Edwin Giesbers / Banded orange heliconian butterfly (Dryadula heliconius), Costa Rica

Jouan & Rius / Zebra longwing butterfly (Heliconius charithonia), Costa Rica

Ingo Arndt / Tiger Heliconian (Heliconius ismenius) butterfly, South America

Ingo Arndt / Tiger Heliconian (Heliconius ismenius) butterfly, South America

Ingo Arndt / Tiger Heliconian (Heliconius ismenius) butterfly, South America

Ingo Arndt / Heliconius Butterfly (Heliconius sp) egg on vine, Costa Rica

Gerry Ellis / Crimson-patched Longwing (Heliconius erato) caterpillar trio eating leaf, Costa Rica

Thomas Marent / Zebra Butterfly (Heliconius charitonius) butterfly, Alluriquin, Ecuador

Konrad Wothe / Tiger Longwing (Heliconius hecale) butterfly portrait, Costa Rica

ZSSD / Crimson-patched Longwing (Heliconius erato) butterfly on leaf, native to South America

PREMAPHOTOS / Red or small postman butterfly (Heliconius erato) males at their communal roost at night in Amazonian rainforest, Brazil

Barry Mansell / Tiger Longwing Butterfly (Heliconius hecale) wingspan of almost 4 inches/ 10 cm, Mexico to Peruvian Amazon. Captive

Ingo Arndt / Heliconia Butterfly (Heliconius antiochus) specimens in Inbio collection showing color variation within the species, Costa Rica

Ingo Arndt / Zebra Butterfly (Heliconius charitonius) emerging from chrysalis, Costa Rica

Christian Ziegler / Six species of butterfly and two species of moth, all members of the (Heliconius ismenius) batesian mimicry ring, the (Heliconius ismenius clarescens) in the middle is considered the original model of...

Willem Kolvoort / Heliconius butterfly (Heliconius sp) North Suriname

Rod Williams / Postman butterfly {Heliconius melpomene} feeding on hibiscus, captive, from South America

Philippe Clement / Zebra longwing butterfly {Heliconius charithonia} perching on leave, Monteverde NP, Costa Rica.

Luiz Claudio Marigo / {Heliconius sp} butterfly feeding on {Eupatorium sp} flower, Brazil

Kim Taylor / Heliconius Butterfly (Heliconius species) captive

Steven David Miller / Zebra longwing butterfly {Heliconius charithonia}

Brian Lightfoot / Zebra longwing butterfly (Heliconius charithonia) + on flower. Amazonia

Lynn M Stone / Zebra longwing butterfly on Hibiscus flower {Heliconius charithonia}

Doug Wechsler / Heliconius butterfly at night roost, Guyana, S. America

ZSSD / Zebra Butterfly (Heliconius charitonius) using probiscus to feed at flower, California

Michael & Patricia Fogden / Heliconius Butterfly (Heliconius hewitsoni) males attempting to mate with female emerging from pupa, rainforest Costa Rica

Michael & Patricia Fogden / Sapho Longwing (Heliconius sapho) butterfly poisonous Mullerian mimic, in the rainforest, Costa Rica

Michael & Patricia Fogden / Passionvine Butterfly (Heliconius clysonimus) on Orchid (Epidendrum radicans) a mimic of Scarlet Milkweed, Asclepias curassavica, and Largeleaf Lantana (Lantana camara) in the cloud forest, Costa Rica

Michael & Patricia Fogden / Passionvine Butterfly (Heliconius clysonimus) on Orchid (Epidendrum radicans) a mimic of Scarlet Milkweed, Asclepias curassavica and Largeleaf Lantana (Lantana camara), in the cloud forest, Costa Rica

Michael & Patricia Fogden / Heliconius Butterfly (Heliconius hewitsoni) pupae on Heliconia leaf, rainforest Costa Rica

Michael & Patricia Fogden / Tiger Longwing (Heliconius hecale) larva feeding on Passionvine leaf, rainforest, Costa Rica

Michael & Patricia Fogden / Heliconius Butterfly (Heliconius hewitsoni) eggs and larvae on leaves of Passionvine (Passiflora pittieri) rainforest, Costa Rica

Michael & Patricia Fogden / Passionvine Butterfly (Heliconius clysonimus) about to alight on Lantana flowers, note proboscis, cloud forest, Costa Rica

Michael & Patricia Fogden / Passionvine Butterfly (Heliconius clysonimus) collecting pollen at flowers of Psiguria vine, cloud forest, Costa Rica

Michael & Patricia Fogden / Crimson-patched Longwing (Heliconius erato) buttterfly feeding on Lantana flower (Lantana sp) in the rainforest, Costa Rica

Michael & Patricia Fogden / Heliconius Butterfly (Heliconius hewitsoni) feeding on Lantana flowers (Lantana sp) which are Mullerian mimics, Costa Rica

Michael & Patricia Fogden / Crimson-patched Longwing (Heliconius erato) butterfly feeding on Lantana flower (Lantana sp) in the rainforest, Costa Rica

Michael & Patricia Fogden / Heliconius Butterfly (Heliconius hewitsoni) feeding on Lantana flowers (Lantana sp) which are Mullerian mimics, Costa Rica

Michael & Patricia Fogden / Passionvine Butterfly (Heliconius clysonimus) feeding at Scarlet Milkweed (Asclepias curassavica) which are mimicked by Shrub Verbena, Lantana camara and an Orchid, Epidendrum radicans, Costa Rica

Michael & Patricia Fogden / Passionvine Butterfly (Heliconius clysonimus) feeding at Largeleaf Lantana (Lantana camara) flowers, a mimic of Scarlet Milkweed Asclepias curassavica in the cloud forest, Costa Rica

Michael & Patricia Fogden / Butterfly (Dryadula heliconius) feeding at flowers of Milkweed (Asclepias sp) in rainforest, Costa Rica

Michael & Patricia Fogden / Butterfly (Dryadula heliconius) feeding at flowers of Milkweed (Asclepias sp) in rainforest, Costa Rica

Mark Moffett / Tiger Longwing (Heliconius hecale) butterfly eggs on plant tendril, Peruvian Amazon

Mark Moffett / Tiger Longwing (Heliconius hecale) butterfly close-up, side view, Peruvian Amazon

Mark Moffett / Tiger Longwing (Heliconius hecale) caterpillars, Peruvian Amazon