A barely audible "peep" note was heard from one hatchling sharp-tailed sparrow when I held it near my ear.
I built a corral of hardware cloth around one sharp-tailed sparrow nest in order to measure the young after they left the nest.
Seven nests of the sharp-tailed sparrow were found; two of these were old nests.
Although I heard it only a few times, the flight song of the sharp-tailed sparrow seemed slightly louder than the normal song.
The sharp-tailed sparrow feeds everywhere in the marsh, but mostly in areas of dense and matted black grass.
I do not know whether the sharp-tailed sparrow has a comparable call.
The sharp-tailed sparrow has a complete pre-nuptial, as well as a complete postnuptial, molt.
Four of the five sharp-tailed sparrow nests I found contained at least three eggs and one contained four eggs.
The sharp-tailed sparrow prefers the inner, drier areas of a marsh, where black grass is dominant.
The sharp-tailed sparrow, which has two complete molts annually, generally forages in dense, abrasive vegetation.