Bachman's sparrow nests are constructed on the ground by females and are primarily made of grasses. All nests (n=71) found in a study in shortleaf and loblolly pine plantations of Arkansas were built on the ground. Most nests (70%) were built at the base of bluestem clumps, although nests were found at the base of small trees, forbs, and other grass species. Bachman's sparrow nests are dome-shaped with an opening typically oriented to the north. However, there is some variation in nest shape and on the Arkansas study site above, only 7% of nests were not either partially or completely domed. Bachman's sparrow nest shape may vary geographically, as nests found farther north in their historic range were infrequently domed.