Many butterflies are attracted to damp soil and engage in a common behavior known as "puddling." While we typically picture butterflies delicately sipping nectar from flowers, many species obtain their nutrients from a surprising variety of sources, including rotting fruit, sap, dung, carrion and mud. It is believed that butterflies, especially males, obtain salts and minerals from mud.
|The brown underside of the wings provides camouflage as these butterflies hibernate during the winter. |
Also note the butterfly's extended proboscis (feeding organ) taking in nutrients from the mud.