Why is barn owls ecosystem grasslands?

Barn owls play a crucial role in grassland ecosystems by acting as natural pest controllers. They primarily feed on small mammals, such as voles and mice, which can become overpopulated and cause damage to vegetation and crops. By maintaining the balance of these populations, barn owls contribute to the overall health of grassland habitats. Their presence also indicates a healthy ecosystem, as they require specific conditions for hunting and nesting.