Ammospiza maritima
The Seaside Sparrow (*Ammospiza maritima*) is a medium-sized New World sparrow, typically measuring 13-15 cm (5-6 inches) in length with a wingspan of 20-25 cm (8-10 inches) and weighing 17-28 grams (0.6-1.0 ounces). Its plumage is a mosaic of dark olive-gray and brown on the upperparts, with distinctly streaked flanks, a contrasting yellowish lore, and a grayish breast often lightly streaked. Key identification marks include this yellowish patch between the eye and bill, a short, spiky tail,...
An obligate resident of coastal salt marshes, tidal creeks, and estuaries, this species thrives in dense cordgrass and saltgrass vegetation at sea level. It prefers areas with regular tidal inundation, offering both food and nesting cover.
Primarily insectivorous, feeding on a diverse array of marsh invertebrates including crabs, snails, spiders, flies, beetles, and caterpillars, supplemented by some seeds of marsh grasses. Forages by gleaning from vegetation and probing mud.
Seaside Sparrows are largely diurnal but often remain hidden within dense marsh vegetation, making them more frequently heard than seen. They forage by walking or hopping on mudflats and low vegetation, gleaning insects and small crustaceans, occasionally probing the substrate with their bills. M...
The Seaside Sparrow's geographic distribution spans the Atlantic and Gulf Coasts of North America. Its breeding range extends from coastal Maine southward along the Atlantic seaboard through Florida, and westward along the Gulf Coast to Texas. Northern populations, such as those in New England an...
Least Concern
- The Seaside Sparrow possesses specialized salt glands above its eyes, allowing it to excrete excess salt and drink saltwater, a crucial adaptation for its saline habitat. - There are multiple recognized subspecies, including the famous Dusky Seaside Sparrow (*A. m. nigrescens*), which unfortuna...