The rufous wren has a length of about 16.5 cm (6.5 in). Birds in most of Colombia and in Ecuador are a uniform dark chestnut-brown colour with slight blackish barring on the wings and tail, though this is difficult to observe in the field. The lores are also blackish. Individuals in northeastern Colombia and in Venezuela are a slightly paler shade, especially on the crown. The rufous wren could be confused with the sepia-brown wren (Cinnycerthia olivascens), but that species is less rufous and has bolder barring on wings and tail. Another similar bird is the rufous spinetail (Synallaxis unirufa), but that species has a longer tail, has no barring on wings and tail and is altogether different in voice and habitsTaken from: Wikipedia.
