As visitors to a bustling park in northeast Los Angeles shot hoops, scrambled up play equipment and lounged in manicured grass, an endangered songbird covertly—but not quietly—did his part to stave off extinction. As visitors to a bustling park in northeast Los Angeles shot hoops, scrambled up play equipment and lounged in manicured grass, an endangered songbird covertly—but not quietly—did his part to stave off extinction. Ecology Phys.org – latest science and technology news stories