A standard Scytalopus tapaculo: plain dark gray with browner flanks and rump. Acts like a mouse, scurrying around on or near the ground within forests. Very difficult to see. Restricted range on west slope of Andes in Colombia and Ecuador. Occurs from around 350–1,000 m elevation, lower than Nariño Tapaculo. Far more often heard than seen. Listen for fairly slow series of piercing “peew” notes, much slower than Nariño.