Urban sprawl has put many animal and plant species on the verge of extinction, and butterflies are no exception. The California pipevine swallowtail is a beautiful blue butterfly which has been living in San Francisco for centuries. But as city development has increased since the early 20th century, this wonderful butterfly became a rare sight in the city. Saving the butterfly and reintroducing it to San Francisco became the mission for Tim Wong, an aquatic biologist, and he does it right in his backyard.
from BrightSide RSS https://brightside.me/wonder-people/a-man-from-san-francisco-repopulates-rare-butterfly-species-in-his-own-backyard-715860/
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