Southern swamp sparrows are one of three subspecies of swamp sparrow. They can be distinguished from the coastal plain swamp sparrow by their smaller bill and brown eye stripe, whereas the coastal plains sparrow has black markings and a larger bill.
Swamp sparrows occur throughout North America, but southern swamp sparrows can be found from northern Michigan and Wisconsin and parts of southern Quebec and Nova Scotia, south to the Gulf Coast, into central and southern Mexico and southern Florida.
Southern swamp sparrows are primarily insectivorous, but will supplement their diet with seeds, weeds and grasses depending upon location and time of year.
Swamp sparrows have an extremely large range, as well as an increasing population.