Konrad Wothe / Small Striped Swordtail (Graphium policenes) butterflies sipping minerals on shore, Lake Tanganyika, Mahale Mountains National Park, Tanzania

Piotr Naskrecki / Moth trio feeding on minerals, Fort Fordyce Nature Reserve, Eastern Cape, South Africa

Marie Read / Eastern Spinebill (Acanthorhynchus tenuirostris) (a member of the honeyeater family, Meliphagidae) sipping nectar from orange flowers, Atherton Tableland, Queensland, Australia, October.

Chien Lee / Fivebar Swordtail (Graphium antiphates) and Common Jay (Graphium doson) butterflies feeding on minerals on riverbank, Gunung Mulu National Park, Malaysia

Thomas Marent / Looper Moth (Dysphania sagana) feeding on minerals in soil, Gunung Leuser National Park, northern Sumatra, Indonesia

Thomas Marent / Tawny Rajah (Charaxes bernardus) butterfly feeding on minerals in sand, Gunung Leuser National Park, northern Sumatra, Indonesia

Thomas Marent / Tawny Rajah (Charaxes bernardus) butterfly feeding on minerals in sand, Gunung Leuser National Park, northern Sumatra, Indonesia

Thomas Marent / Swallowtail Butterfly (Graphium sarpedon) feeding on minerals in sand, Gunung Leuser National Park, northern Sumatra, Indonesia

Thomas Marent / Swallowtail Butterfly (Graphium sarpedon) feeding on minerals in sand, Gunung Leuser National Park, northern Sumatra, Indonesia

Thomas Marent / Straight Line Mapwing (Cyrestis nivea) butterfly pair feeding on minerals in sand, Gunung Leuser National Park, northern Sumatra, Indonesia

Thomas Marent / Straight Line Mapwing (Cyrestis nivea) butterfly group feeding on minerals in sand, Gunung Leuser National Park, northern Sumatra, Indonesia

Thomas Marent / Straight Line Mapwing (Cyrestis nivea) butterfly feeding on minerals in sand, Gunung Leuser National Park, northern Sumatra, Indonesia