The coastal plain swamp sparrow inhabits tidal marshes of the Middle Atlantic states.
It favors the high marsh, an area dominated by a mix of tall and short grasslike vegetation with a few shrubs intermingled. This strip of marsh sits between the upland and the low marsh, an area of tidal guts, mudflats and extensive grasslike vegetation.
The favored plant community consists of patches of high tide bush (Iva frutescens), small shrubs in the above picture, with an understory of salt hay (Spartina patens), the wavy, grasslike vegetation.
Many other plant species may be intermingled and the tall stems of Phragmites and Spartina cyanosuroides are often used as singing perches by males.
The vegetation can be quite dense but is usually less than 10 feet tall. Tidal guts and brackish ponds are often present.
Many other birds occupy the same habitat as the coastal plain swamp sparrow. Here are some of the more common ones.