Description wikipedia

The pectoral sparrow (Arremon taciturnus) is a small species of New World sparrow first described in 1779 by Georges-Louis Leclerc. It has 2 subspecies. Like other sparrows in its family Arremon, it has pale green-to-olive wings, however its breast has a distinctive black band going across it, however in subspecies nigrirostris it is not continuous and instead breaks in the center. It is found in Bolivia, Brazil, Colombia, French Guiana, Guyana, Peru, Suriname, and Venezuela. Its natural habitat is subtropical or tropical moist lowland forests. The phenology of their breeding is unknown, however they have been observed nest building as early as August and as late as December. Incubation takes 15–17 days, however the duration of the nestling and fledgling stages are unknown due to a lack of research. They are omnivorous, mainly eating insects and seeds, and are considered a least-concern species by BirdLife International due to their large population and range.