Just a stone's throw from two of Los Angeles' busiest freeways lies the Sepulveda Basin Wildlife Reserve, a unique spot in an urban jungle. The northern portion of the reserve is adorned with 30-foot-tall cottonwood trees, spots of coyote bush and other plants. Native plants cover 50 percent of the nature spot, says Kris Ohlenkamp with the San Fernando Valley Audubon Society. On the other side it was significantly more than that," he says. A cement corridor leads to the southern part of the reserve. "This 48 acres was the original wildlife area," Ohlenkamp says, "and now it's all gone."