Vesper Sparrow (Pooecetes gramineus), a Special Concern species in Wisconsin, prefers dry, open habitats with short, sparse vegetation, some bare ground, and short to moderate shrub or tall forb cover. In Wisconsin, this includes barrens, sand prairies, dry to dry-mesic prairies, short to medium height idle grasslands, pastures, hayfields, and small grain fields. It nests on the ground and may attempt multiple broods. The recommended avoidance period is May 5 - August 1.