Decades after a US butterfly species vanished, a close relative is released to fill gap

Wildlife experts are bringing butterflies back to the Presidio National Park in San Francisco as part of an effort to restore native ecosystems

​Wildlife experts are bringing butterflies back to the Presidio National Park in San Francisco as part of an effort to restore native ecosystems Wildlife experts are bringing butterflies back to the Presidio National Park in San Francisco as part of an effort to restore native ecosystems US