Bauer-Brockway Barrens State Natural Area is a 240-acre sandy barrens with scattered open-grown jack pine and Hill's Oak. The rare Karner blue butterfly thrives on the prairie's wild lupine. Other prairie plants include June grass, little bluestem grass, sand primrose, bird's-foot violet, western sunflower and cream wild indigo. Shrubs such as American hazelnut and New Jersey Tea provide singing platforms for many grassland birds including Field and Vesper sparrow, Nashville and Prairie Warblers, Indigo Bunting, and Eastern Towhee.