Man Repopulated Entire City With Butterflies From His Own Backyard

‘During the day, Tim Wong is all about water life as an aquatic biologist. But when he changes into his cape at the end of his shift, he transforms into an incredible cultivator of butterflies.
Tending to butterflies was his lifelong hobby – who knew that his backyard conservationism would save a population that vanished from San Francisco?
The pipevine swallowtail – with its breathtaking shades of blue, black and green – isn’t officially endangered, although a major concern broke out when the insect suddenly started rapturing out of California as development efforts multiplied. In fact, the swallowtail vanished so entirely from San Francisco, that Wong had to collect caterpillars from private residencies in vegetative areas in order to start his project.’
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