Grasses, flowers, and other plants support the prairie food web. Butterflies thrive on flower nectar and may use just one plant species to host their caterpillars. Bees pollinate the flowers. Ground-nesting birds hide their nests among the grasses and forage for plentiful bugs. Townsend’s voles feast on prairie plants and insects and build runways in the soil duff. The abundance of small mammals, birds, and insects draws predators such as hawks, falcons, and coyotes.