Reddish-brown wren with a faint pale eyebrow found in the understory of humid montane forest. Larger and longer-tailed than the tiny Mountain Wren, which also has a bolder eyebrow. Replaced at the northern end of its range by the very similar Peruvian Wren. Forages singly or in pairs low in bushes and near the ground. Listen for its loud song, a flowing series of whistles and trills.