The LA Times reports:
Thirty-three years after being classified an endangered species, the El Segundo blue butterfly is flourishing on 200 acres of sand dunes near Los Angeles International Airport.
Entomologist Richard Arnold, a consultant to the airport, said Wednesday that the butterfly population there has grown to 35,000 to 100,000 insects, depending on the year, up from a few thousand when the federal government placed it on the endangered list in 1976.
More info here.
Butterfly photo from SoCalButterflies.com Sign photo by AuntiLaurie.