Varzea Schiffornis

Tiny, short-tailed, plain-brown wren with a huge voice. Subtly patterned, with indistinct pale eyebrow and diffuse dark barring on flanks and wings. Constantly keeps tail cocked at an angle. Found in a variety of forested habitats, but always prefers wetter areas with thick tangles, often around treefalls and moss. Darker, smaller, and shorter-tailed than House Wren. Incredibly beautiful song is a long series of musical whistles and trills; an unmistakable and common sound in northern forests. Call is a dry, low "chimp" remarkably similar to Song Sparrow.

Bamboo-loving wren found locally on the eastern slope of the Andes in northern Peru. Brown and gray overall with black and white face and mustache stripes. Gray underparts are unspotted; crown brown with black edges. Pairs or small groups skulk in dense bamboo, where they are most often found by their remarkable voice, a truly operatic performance of low-pitched hooting whistles given by two or three birds at once.

Widespread ‘green woodpecker’ of tropical and subtropical forest; the only species of overall green woodpecker in much of its range, and therefore distinctive. Prefers mid-upper levels of forest, where can be very sluggish, and is overlooked easily unless its calls are known. Both sexes have red on back of head. ‘Bronze-winged Woodpecker’ of Northeast Mexico has less red on head, and very different voice from widespread Golden-olive forms.