A global citizen science platform
to discover, share and identify wildlife
Papilio glaucus / Papilio troilus / Papilio polyxenes
Male Eastern, Black & Spicebush swallowtails 'puddling' in moist soil at the edge of Williamsport lake. By sipping moisture from mud puddles, butterflies take in salts and minerals from the soil. This behavior is called puddling, and is mostly seen in male butterflies. That's because males incorporate those extra salts and minerals into their sperm.
There were at least 30 swallowtails in this one spot.