The Sedge Wren is a small bird of wetlands with dense grasses and sedges. The North American breeding population moves south for winter, while the taxonomic account also notes that South American populations may warrant separate treatment.
It has dark brown and black streaks on the head and back, a whitish throat and belly, and a barred tail. The sexes look alike.
It moves near the ground through dense grass and sedges, searching for insects and spiders. The North American population migrates at night from its breeding grounds.
An extinction-risk assessment has not been added yet.