Over 200 springs flow into the marsh along its west border creating riparian habitat which is used by many songbirds, snipe, rail and small mammals. They also provide a water source for larger mammals. With slight increases in elevation, wet meadows gradate into grasslands and sagebrush-rabbitbrush habitat. Pinon Pines and juniper cover the slopes of the Ruby Mountains that rise to 11,000 feet along the west side of the refuge. Canyons provide habitat for a variety of wildife.
Rock cliffs provide raptors with nesting and perching sites.
A mountainside of dead trees, home for cavity dwelling birds, was the result of a 1979 fire. Viewing Wildlife Viewing wildlife is best done during morning and evening hours. Binoculars or a spotting scope greatly assist in identifying wildlife and observing their behavior. For a unique opportunity to see the marsh wildlife up-close, the South Sump is open during part of the year for canoeing and electric motors. The following list of mammals includes those found on the refuge and adjacent lands.