Genus Margarornis

Beautiful Treerunner - Its natural habitat is subtropical or tropical moist montanes. It is threatened by habitat loss.

Ruddy Treerunner - This treerunner is found in hills and mountains from 1200 m up to the timberline, in forests and adjacent edges and clearings. It builds a large enclosed oval nest 25 m high in the crown of a tree on the underside of a thick branch. The nest is camouflaged with mosses and epiphytes and has a downward pointing entrance tunnel at its base. The eggs are undescribed, but members of this family typically lay two white eggs.

Pearled Treerunner - It is found in Argentina, Bolivia, Colombia, Ecuador, Peru, and Venezuela. Its natural habitat is subtropical or tropical moist montane forests.

Fulvous-dotted Treerunner - Its natural habitat is subtropical or tropical moist montanes. It is threatened by habitat loss.