SAN FRANCISCO (KPIX 5) -- The once-dwindling population of a beautiful, blue iridescent butterfly has seen a rebound thanks to the efforts of a Bay Area biologist who took his work home with him ...

Some 17 years ago, he began planting pipeline hoping to help in rejuvenating the local California Pipevine Swallowtail population. "I planted it here 17 years ago with the hope that maybe someday ...

Pipevine swallowtail butterflies, especially, employ some pretty mind-boggling tricks during their short lives. ... California pipevine is a climbing perennial that grows throughout Sonoma County, ...

The California Pipevine Swallowtail butterflies used to flutter about San Francisco aplenty, but their populations declined in the 20th century as more areas were developed. Now in the early 21st ...

I didn’t see the pipevine swallowtail butterfly (Battus philenor hirsuta); it was probably too early in the season. Eggs from the butterfly are laid on the plant.

But the California pipevine swallowtail butterfly loves it, even though the vine is trying to poison the butterfly’s babies. Talk about a toxic relationship! The caterpillars have evolved to ...

Another example of a plant host-butterfly relationship is between the California pipevine plant (Aristolochia californica) and the pipevine swallowtail butterfly (Battus philenor hirsuta ...

The devilish caterpillars of the pipevine swallowtail butterfly *devour* the California pipevine, never mind that the plant is trying to poison them. Their butterfly moms don’t pollinate the pipevine ...

The devilish caterpillars of the pipevine swallowtail butterfly *devour* the California pipevine, never mind that the plant is trying to poison them. Their butterfly moms don’t pollinate the pipevine ...