Moss-backed Sparrow

The moss-backed sparrow (Arremon dorbignii), also known as the stripe-crowned sparrow, is a species of bird in the family Passerellidae, the New World sparrows. It is found in South America from central Bolivia to northwestern Argentina. == Description == The adult male moss-backed sparrow's head is mostly black, with a white supercilium from the lores to the back of the head and a narrow gray streak on the crown. The neck is gray and the back, wings, and tail are dull olive green. Its underside is white with grayish edges and a narrow black band across the upper chest. The adult female is similar but duller overall. The crown strip is olive and the underparts are buffy with brown flanks. Juveniles are similar to the adults but duller. The moss-backed sparrow shares the "striking orange bill" of its former "parent" saffron-billed sparrow. Six specimens from Argentina had a mean weight of 22.1 g (0.78 oz) It differs from the saffron-billed sparrow by a slightly narrower collar and a longer eyebrow spanning on both sides of the eye. == Distribution and habitat == The moss-backed sparrow is found in Bolivia from La Paz, Cochabamba, and Santa Cruz Departments into northwest Argentina…