Sirystes are highly distinctive flycatchers of low-to-middle elevation humid forest, and as a group are distributed from Panama south to Argentina and southeastern Brazil. Previously all populations were included in a single species, but song, and, to a lesser extent, the plumage, varies across the Neotropics, and now four species of sirystes are recognized. All sirystes are above with a pale rump; a black crown, wings, and tail; and white edging to the wing coverts and secondaries. The white wing edging is particularly prominent in Choco Sirystes, which occurs from eastern Panama south to northwestern Ecuador. All sirystes have the slender bodied, slightly crested appearance of Myiarchus flycatchers, and also share with Myiarchus the habit of nesting in tree cavities.