hoots, grunts, and huffs, approached the cabin, and threw a softball-sized rock onto the porch. The sounds you hear in this audio file are unmistakably from a non-human primate. The sounds alone are incredible enough; however, when one contemplates that this was recorded in the Ouachita Mountain Ecoregion—in southeastern Oklahoma—it is stunning. We believe this recording and the “huff/grunt rock” recordings that follow have been downplayed and overlooked and should be considered some of the be