White-headed Wren

The white-headed wren (Campylorhynchus albobrunneus) is a species of bird in the family Troglodytidae. It is found in Colombia and Panama. == Taxonomy and systematics == The white-headed wren has in the past been treated as conspecific with band-backed wren (Campylorhynchus zonatus) and with thrush-like wren (C. turdinus). Molecular analyses refuted that treatment and confirmed that it is a separator species. The white-headed wren has two recognized subspecies, the nominate C. a. albobrunneus and C. a. harterti. == Description == The white-headed wren is 18.5 cm (7.3 in) long and weighs 27.5 to 39 g (0.97 to 1.38 oz). It is unique among wrens, having essentially only two colors in large blocks. The sexes are alike. The nominate adult's entire head, nape, and underside from the throat through the lower belly are pure white. The rest of the body but for the vent area is dull blackish brown; the vent is gray-brown. C. a. harterti differs from the nominate only in having darker upperparts. The juvenile has a streaky gray-brown crown, a buffy face and underparts, and a pale cinnamon belly. == Distribution and habitat == The nominate white-headed wren is found only in Panama, from the Canal Zone east…