The giant tortoise population on the Galapagos island of Española is on the rebound. The finding bolsters support for efforts to reintroduce captive-bred endangered species to their native habitats. But, a close look at the giant tortoise’s habitat on Española suggests that complete success of reintroduction programs requires more time and possibly additional human intervention, specifically by reconstructing endangered species’ natural environs, researchers report October 28 in PLOS ONE.