Thomas Marent / Dyson's Swordtail (Rhetus dysonii) butterfly, Tatama National Park, Colombia

Piotr Naskrecki / Large Striped Swordtail (Graphium antheus) butterflies, Gorongosa National Park, Mozambique

Thomas Marent / Dyson's Swordtail (Rhetus dysonii) butterfly, Tatama National Park, Colombia

Thomas Marent / Dyson's Swordtail (Rhetus dysonii) butterfly, Santa Maria, Colombia

Alex Hyde / Blue Doctor butterfly (Rhetus periander) drinking salts from mineral-rich river clay, a behaviour know as 'puddling'. On the banks of the Manu River, Manu Biosphere Reserve, Amazonia, Peru. No...

Alex Hyde / Blue Doctor butterfly (Rhetus periander) drinking salts from mineral-rich river clay, a behaviour know as 'puddling'. On the banks of the Manu River, Manu Biosphere Reserve, Amazonia, Peru. No...

Piotr Naskrecki / Large Striped Swordtail (Graphium antheus) butterflies at waterhole, Gorongosa National Park, Mozambique

Piotr Naskrecki / Large Striped Swordtail (Graphium antheus) butterfly, Gorongosa National Park, Mozambique

Hanne & Jens Eriksen / Spot swordtail butterflies (Graphium nomius) puddling, Thailand

Alex Hyde / Blue jay butterfly (Graphium evemon eventus) Danum Valley, Sabah, Borneo.

Jiri Lochman / Macleay's Swallowtail Butterfly (Graphium macleayanum), Gibraltar Range National Park, Gondwana Rainforest UNESCO World Hertiage Site, New South Wales, Australia.

Jen Guyton / Several species of butterfly from the genus Graphium 'puddling' in Gorongosa National Park, Mozambique.