The Appalachian tiger swallowtail butterfly is a rare breed: Some 100,000 years ago, two different species mated and their hybrid offspring gave rise to the Appalachian species, researchers have found ...

Every summer in southeastern Pennsylvania, I see several species of pretty butterflies in abundance, but at different times, prolonging the beauty of the butterfly season. Though they are here in good ...

BALDWIN -- The Karner blue butterfly is one finicky flutterer. Nature buffs won't see this tiny, ornate insect just anywhere -- caterpillars feed only on wild lupine plants; adults are found in flat ...

I have been an avid butterfly watcher for many years now, and I follow this hobby with great passion, alongside bird watching ...

A record number of one of the UK's rarest butterflies has been found at a nature site. More than double the number of silk ...

Conventional wisdom is that if you cultivate host plants, butterflies will come. Take, for example, milkweed. After declining monarch populations began making headlines in the late 1990s, people ...

A unique butterfly breeding experiment gave researchers an opportunity to study the physical and genetic changes underlying the evolution of structural color, responsible for butterflies' iridescent ...

Next time you’re gardening in your backyard, don’t be surprised if you spot peacocks and zebras. Butterflies, that is. White peacock and zebra heliconian were the second and third most-common species ...

Over the next several weeks, many of us will be keeping an eye out for migrating monarch butterflies heading south to spend the winter in Central Mexico forests. The monarch’s long, arduous trek in ...