Alamosa and Monte Vista National Wildlife Refuges (NWR) are found in the heart of the Colorado's San Luis Valley. Alamosa NWR includes 11,169 acres of wetlands of various depths and sizes located primarily within the Rio Grande flood plain. The natural wet meadows, river oxbows, and riparian corridors support high wildlife diversity including songbirds, water birds, raptors, deer, beaver, and coyotes. <P>The artificially created wetlands on Monte Vista NWR's 14,804 acres are intensively managed to provide habitat for a wide variety of waterfowl and other water birds. Mallards, pintail, teal, and Canada geese are common, as are American avocets, killdeer, white-faced ibis, egrets, and herons. Irrigation canals and wells provide precious water to maintain important wetland habitat. <P>The entire Rocky Mountain population of sandhill cranes migrate biannually through the Monte Vista NWR and the San Luis Valley each year. These cranes collectively spend more time in the San Luis Valley than at their wintering and breeding grounds, making it a crucial migratory stopover for this population. The Monte Vista Crane Festival is held annually in early March to celebrate the return of the cranes. <P>