Eastern Whip-poor-will (Antrostomus vociferous), a Special Concern species strongly suspected to be declining across its range, nests on the ground in an open understory within oak and maple upland hardwood forests in southern Wisconsin, and in upland mixed deciduous-pine forests in the north. In other parts of its range, they may attempt multiple broods, it is unknown whether they do so in Wisconsin. The recommended avoidance period is May 10 - August 10.