The largest bird in North America is making a comeback after reaching an alarming population size of about 20 birds. The California condor was highly endangered during the late 20th century but holds spiritual importance to indigenous tribes and nature-lovers. Last week, conservationists announced that the 1,000th chick hatched and successfully survived, giving new hope that the birds’ population will continue to grow. The condor population plummeted in the 20th century because of hunting, habitat loss and lead poisoning from eating the carcasses of animals that had been shot with lead bullets.