The Rusty-margined Flycatcher is found at forest edge and in woody second growth from eastern Panama to south to southeastern Brazil. Rusty-margined Flycatchers have a dark sooty head with a yellow coronal patch and a white supercilium, brown upperparts and wings with cinnamon edges on the secondaries and proximal primaries, and bright yellow underparts. This general color pattern is shared among several genera of large-bodied neotropical flycatchers, including closely related species such as the Social Flycatcher Myiozetetes similis. More retiring and less vocal than the Social Flycatcher, the Rusty-margined Flycatcher often perches in open areas hawking insects or sallying to the ground to forage. The seasonal movements of the Rusty-margined Flycatcher are not well known, but some relative abundance of some in northern Sound America is reported to fluctuate seasonally.