In the northeastern portion of their range, Grasshopper Sparrows breed in large unmowed pastures, a habitat that is rapidly disappearing as dairy farms give way to cropland and suburban sprawl. Cortland Co., NY © Ken Rosenberg March 30, 2017 by In the northeastern portion of their range, Grasshopper Sparrows breed in large unmowed pastures, a habitat that is rapidly disappearing as dairy farms give way to cropland and suburban sprawl. Cortland Co., NY © Ken Rosenberg