Botanists are scouring the US-Mexico border to document a forgotten ecosystem
JACME, Mexico — Near the towering border wall flanked by U.S. Border Patrol vehicles, botanist Sula Vanderplank heard quail chirping in the scrub. This is the sound a bird makes to signal its departure from its mates or flock. . Then silence. When the quail on the Mexican side called back, the soundtrack alternated between […]