Buff-breasted Wren

The buff-breasted wren (Cantorchilus leucotis) is a species of bird in the family Troglodytidae. It is found in the Amazon Basin of northern Brazil and Amazonian Colombia, Ecuador, Peru and northern-border Bolivia, and also the Guianan countries of Guyana, Suriname, and French Guiana. It occurs in non-Amazonian regions of Venezuela and Colombia and its range extends into eastern Panama. == Taxonomy and systematics == As the buff-breasted wren is understood in 2021, it has 11 subspecies. However, there are suggestions that some of them might not be valid, that some might be separate species, and on a larger scale, that the taxonomy of the entire genus Cantorchilus has not been completely resolved. == Description == Male buff-breasted wrens weigh 18.5 to 22.8 g (0.65 to 0.80 oz) and females are lighter at 16.0 to 19.5 g (0.56 to 0.69 oz), but the sexes are otherwise similar. There is considerable variation in plumage across the species' wide range. Adults' head, nape, shoulders, tail, and back are rufescent to grayish brown; the tail is heavily barred. The throat, supercilium, and the rest of the face range from whitish through gray to gray-brown. The chest is buffy and the belly more cinnamon. Fledglings…