The Giant Power of Tiny Parks
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A velvety butterfly called the coastal green hairstreak once peppered the fog-capped hills of San Francisco. But then the city began to build out, and new structures fractured the jewel-toned insect’s native range. The butterflies were scattered into isolated populations, some only a few blocks apart—an astronomical distance for a creature that, over its lifetime, can venture only a few hundred feet or so from the native shrubs it depends on.
In 2007, when the species was nearly gone from San
In 2007, when the species was nearly gone from San
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