Birds
Swamp Sparrow
Melospiza georgiana · also called swamp sparrows
A swamp sparrow wades boldly into a shallow patch of marsh water, briefly submerging its head to snatch an aquatic insect most other sparrows would never even attempt to reach, before hopping back onto a clump of sedge to sing its slow, even trill.
Overview
The swamp sparrow, Melospiza georgiana, is a rusty-capped songbird native to freshwater marshes and wet meadows across much of eastern and central North America and Canada. Its unusually aquatic foraging style, capable swimming ability, and nests built directly over standing water make it one of the more water-adapted sparrows found in North America.
A sparrow that doesn’t mind getting wet
While most sparrows stay firmly on dry ground or low, dry vegetation, the swamp sparrow has embraced its wetland habitat fully, wading and even swimming when the situation calls for it.
Status
Least Concern — widespread and stable across suitable freshwater marsh habitat throughout eastern and central North America.
Swamp Sparrow: common questions
Why does the swamp sparrow wade into water to forage?
This species has adapted to exploit aquatic insects that most other sparrows cannot reach, wading directly into shallow marsh water and sometimes submerging its head entirely to snatch prey from just below the surface, a foraging method that takes fuller advantage of its freshwater marsh habitat than a purely land-based foraging style would allow.
How can you identify a swamp sparrow?
Look for a rich rusty-brown cap contrasting with a grey face and breast during the breeding season, a combination distinctive enough to separate it from several similarly sized sparrow relatives, along with its habit of staying low within marsh vegetation rather than foraging in the open.
Where does the swamp sparrow build its nest?
This species builds its nest low within marsh vegetation, often positioned directly over standing water and anchored to reeds or sedges rather than placed on dry ground, a nesting strategy tied closely to its strong dependence on freshwater marsh habitat.
Is the swamp sparrow related to the saltmarsh and seaside sparrows?
Not especially closely despite the similar-sounding names and shared marsh habitat; the swamp sparrow belongs to a different genus than the saltmarsh and seaside sparrows and specifically favours freshwater marshes rather than the tidal salt marsh habitat those two species depend on almost exclusively.