Adults have brown upperparts with a light brown belly and flanks and a white throat and breast. The back has pale streaks. They have a dark cap with pale streaks, a faint line over the eye and a short thin bill. The Sedge Wrens are one of the smallest species of wren at 10 to 12 cm (3.9-4.7 in) and 10-12 grams.
Habitat and Distribution
In North America, their breeding habitat is wet meadows and marsh edges of eastern North America and central Canada. In South America, they are associated with very different habitats, principally p to ramo at very high elevations (3000 meters and above). North American populations migrate to coastal areas in the Southeastern United States, and the entire Gulf Coast south through eastern Mexico.
These birds forage low in vegetation, sometimes flying up to catch insects in flight. They mainly eat insects, also spiders.
For the Sedge Wren, the nest is a round lump attached to low vegetation, entered from the side; it is usually well-hidden. The male often builds several unused nests in his territory; he may puncture the eggs of other birds nesting nearby.
Calls and Songs
The song of the male in North American populations is a rattling trill. The song of Central and South American forms is far more variable.