Many species of birds have been observed on Hailstone Refuge, particularly throughout spring. These species include shorebirds, wading birds, waterfowl, and grassland nesting birds. Mule deer and pronghorn may also be seen here. Native predators like coyote, red fox, and badgers are secretive and not commonly seen but do provide an important ecosystem service by controlling rodent populations and thus ensuring that each ecosystem in which they're present maintains a delicate balance between predator and prey. Rattlesnakes are also present on this Refuge, so please be careful. Like all non-game species on National Wildlife Refuges, they are protected and an integral part of the Refuge's ecosystem.