Few tyrant-flycatchers pose the taxonomic problems that the Bright-rumped Attila does. Twelve subspecies are generally recognized across this species’ extremely broad range, which stretches from northwest Mexico to northwest South America, then over much of the lowland northern two-thirds of the continent, with a highly disjunct population in the Atlantic Forest of eastern Brazil. In addition to reasonably substantial plumage variation, ranging from birds with an olive-green head, breast, and mantle, to those with largely rufous upperparts, the species is also polymorphic, with gray and rufous morphs described. Finally, there are reasonably marked differences in dawn songs between Middle and South American populations, all of which prompt a wide-ranging and very detailed investigation into the species’ taxonomy. Overall, the Bright-rumped Attila is uncommon to fairly common, and inhabits a reasonably wide range of forest types, although it generally avoids heavily disturbed areas.