基金We thank Nikki Boggess, who assisted in labwork. Fieldwork in Vietnam was facilitated by Dr. Le Mahn Hung, and supported by the National Geographic Committee for Research and Exploration. Fieldwork in China was supported by the National Science Foundation (DEB-0344430 to ATP). The laboratory portions of this work were supported by the National Science Foundation (DEB-0743576 to RGM). We thank recordists who shared their Stachyris/Cyanoderma recordings on Xeno-canto.