The fall migration begins in August and peaks in October. Some Canada geese and mallards overwinter along the Green River. Birds of prey also winter in the area, including both bald and golden eagles. Look for Lewis' woodpeckers in the cottonwood groves. White-faced ibis nest in the marshes, and burrowing owls make their homes on the alluvial fans.
Bird life is most abundant in the flood plain.
This list contains 209 species that have been sighted on the refuge. To reach the Refuge, take U.S. 40 west out of Vernal for 15 miles, then travel south on Highway 88 for 13 miles. This blacktop road passes Pelican Lake, which is a good waterbird viewing area. Ouray National Wildlife Refuge bird list. U.S. Fish and Wildlife Refuge.