Each spring, bobolinks return to Connecticut’s hayfields and meadows after an astonishing migration from South America, bringing their bubbling song and streaked, sparrow-sized silhouettes back to the grasslands. They share these open habitats with other grassland birds such as eastern meadowlarks, savannah sparrows and others—species that depend on wide, unbroken fields for nesting and foraging. Because these birds build their nests on or near the ground, the timing of mowing and the preservation of diverse grassland cover can make the difference between a successful breeding season and a silent summer. On this spring day, only males were spotted but the females won’t be far behind.