Ammospiza nelsoni
The Nelson's Sparrow (Ammospiza nelsoni) is a secretive and often elusive New World sparrow, celebrated by birders for its unique marsh habitat and distinctive buzzy song. Measuring approximately 11-13 cm (4.3-5.1 in) in length with a wingspan of 17-19 cm (6.7-7.5 in) and weighing 15-20 g (0.5-0.7 oz), this small passerine is characterized by its striking orange-buff coloration on the face, breast, and flanks, contrasting with a gray crown finely streaked with dark brown. Key identification m...
Exclusively inhabits tidal, brackish, and freshwater marshes, often preferring areas with dense Spartina, Juncus, or other tall marsh grasses, typically at sea level or low elevations.
Primarily insectivorous during the breeding season, consuming spiders, beetles, flies, and caterpillars; shifts to a greater proportion of grass and weed seeds, particularly those of marsh plants, during migration and winter.
Nelson's Sparrows are highly secretive, spending most of their time skulking through dense marsh vegetation, making them challenging to observe. They are diurnal, typically roosting low in dense grass. Foraging involves gleaning insects and seeds directly from marsh plants, often walking along st...
The Nelson's Sparrow has a widespread but disjunct breeding distribution across North America. The nominate subspecies, *A. n. nelsoni*, breeds in the freshwater prairies of central Canada and the north-central United States, extending from Alberta east to Manitoba and south into states like Nort...
Least Concern
- Named after Edward William Nelson, a prominent American naturalist and ethnologist. - Until 1995, it was considered the same species as the Saltmarsh Sparrow, collectively known as the 'Sharp-tailed Sparrow. - Its buzzy, sibilant song is often described as sounding like a grasshopper or a field...