[4] The nominate sepia-brown wren is found from the Central and Western Andes of Colombia south through Ecuador into extreme northern Peru.

[4] The sepia-brown wren forages on and near the ground in dense vegetation, often in flocks of up to 10 individuals.

The breeding pair lays its eggs in a separate nest, a bulky ball with a down-facing tubular entrance.

[4] The sepia-brown wren's song is "complex and variable, a series of musical phrases with changing stress" [1].

It is "[f]airly common in suitable habitat in most of range" and occurs in several protected areas.

[4] However, "The population is suspected to be in decline owing to ongoing habitat destruction and fragmentation.