Two decades of bird surveys show riverside bird specialists returning to restored floodplains. This article was written by Eduardo González‑Sargas, a Colorado State University research scientist and ecologist whose work focuses on river and restoration ecology. For more than a decade, the  Raise the River  coalition, including the National Audubon Society, has worked in collaboration with the United States and Mexico under the framework of Colorado River Treaty agreements (Minutes 319 and 323), to bring back healthy habitats in the Colorado River Delta. Working from my perch at Colorado State University with support from Audubon as well as federal funding, and with partners in Mexico and the United States, I led a series of studies to find out whether those efforts are actually helping birds.…