San Francisco man singlehandedly revives a rare butterfly species in his own backyard
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 century, they’re incredibly rare in the city, so one resident decided to do something. California Academy of Sciences aquatic biologist Tim Wong built a butterfly home in his own backyard, and around three years later is seeing the colorful blue butterflies slowly return.
