Most Colorado itineraries sprint toward the high country, but the state’s eastern plains reward travelers who slow down. This is a landscape of horizon-wide grasslands, quiet reservoirs, and working ranchland where pronghorn trot through sage, hawks kestrel over fence lines, and prairie dogs whistle sentinels from their towns. Wildlife watching here is not about chasing a checklist. It is about reading the land, timing your visit to seasonal rhythms, and learning where public access allows you to look without trespassing. For travelers planning a Colorado trip, the eastern plains offer a quieter, more intimate counterpoint to the Rocky Mountains—and some of the best wildlife viewing in the state.
The Prairie Unfolds: Ecology and Wildlife of Colorado’s Eastern Plains
Colorado’s eastern plains stretch from the Front Range foothills to the Kansas and Nebraska borders, a mosaic of shortgrass prairie, mixed-grass prairie, sand sagebrush, playa wetlands, riparian corridors, and agricultural fields. This is not empty country. It is a working ecosystem shaped by grazing, fire, rainfall, and farming. The shortgrass prairie—dominated by blue grama and buffalo grass—supports pronghorn, swift fox, badger, coyote, and black-tailed prairie dog. Prairie dog towns, in turn, attract ferruginous hawks, burrowing owls, and badgers. Riparian corridors along the South Platte, Arkansas, and Canadian rivers provide crucial cover for white-tailed deer, wild turkey, and migrating songbirds. Reservoirs and playas act as magnets for waterfowl, shorebirds, and gulls. Reptiles such as prairie rattlesnake, ornate box turtle, and six-lined racerunner are part of the fauna, though most visitors notice the birds and mammals first. In spring, playas can fill with water and attract shorebirds within days. The plains are also a place of subtle beauty: distant buttes, cottonwood-lined creeks, and thunderstorms that roll for miles.
The colorado state bird, the lark bunting, is a summer resident of the shortgrass prairie, and its fluttering flight song is a hallmark of the plains in spring and summer.
Seasonal change drives the action. Spring brings mountain plover, long-billed curlew, and a pulse of migrating sparrows, warblers, and shorebirds. Summer is prime time for burrowing owls, swift fox pups, and prairie dog activity, though midday heat pushes many animals into shade. Fall sends raptors south and gathers waterfowl on reservoirs. Winter can be surprisingly productive: rough-legged hawks, ferruginous hawks, bald eagles, and large flocks of Canada geese and ducks use the plains when northern waters freeze. Keep in mind that access shapes everything. Much of the eastern plains is private land, so wildlife watchers should stick to public roads, state wildlife areas, national grasslands, and reservoir parks. A good pair of binoculars and a spotting scope will extend your reach without pushing animals to move.
Prime Places and Seasons for Wildlife Watching on the Plains
The eastern plains are not one destination but a string of habitats. In the north, Pawnee National Grassland near Briggsdale and Grover is a classic introduction to shortgrass prairie. Its rolling grassland and sandstone buttes host pronghorn, mountain plover, long-billed curlew, ferruginous hawk, and lark bunting. The Pawnee Buttes area and nearby public roads offer accessible viewing, especially in early morning and late afternoon. In the southeast, Comanche National Grassland near La Junta and Springfield blends canyon country with prairie. Look for scaled quail, roadrunner, canyon wren, and prairie dogs along public roads and designated trails. The Picket Wire Canyonlands, accessible by guided or permitted trips, adds a dramatic canyon setting for birding and wildlife observation.
Water is the other great attractor. John Martin Reservoir State Park near Hasty and Lamar is a major stopover for waterfowl, shorebirds, and gulls, and its adjacent state wildlife area supports deer, coyote, and raptors. Closer to the Front Range, Barr Lake State Park near Brighton is known for its birding loop and raptor viewing, while Jackson Lake State Park near Fort Morgan and North Sterling State Park near Sterling provide reservoir-based wildlife watching with prairie access. The South Platte and Arkansas river corridors are migration highways; a quiet county road beside a riparian strip can yield wild turkey, wood duck, and migrating warblers.
Timing matters. Spring migration—generally from March into May—brings waterfowl, shorebirds, and songbirds through the plains. Early spring is also when prairie-chickens gather on leks; viewing often requires advance planning, permits, or guided access, so check before you go. Summer is best for burrowing owls, prairie dogs, and nesting raptors, but start at dawn and retreat during heat. Fall migration reverses the flow, with raptors and waterfowl moving through. Winter is underrated: bald eagles, rough-legged hawks, and wintering flocks of geese and ducks can be abundant around open water and agricultural fields. A real-world example: a January drive along the South Platte River corridor might produce bald eagles on ice, a northern harrier quartering a field, and hundreds of Canada geese lifting off at once. That is plains wildlife watching at its best—slow, seasonal, and dependent on water and weather.
Smart and Ethical Fieldcraft for Plains Wildlife Watchers
Wildlife watching on the eastern plains is rewarding precisely because it is not a theme park. You need to prepare for distance, weather, and limited services. Bring binoculars (8×42 or 10×42 are versatile), a spotting scope if you have one, water, sun protection, and layers. The plains are windy, and temperatures can swing from chilly dawn to hot afternoon. Cell service is unreliable in many places, so download offline maps before you leave and carry a paper map as backup. Many roads are dirt or gravel; after rain or snow, they can become impassable. Check conditions locally and drive slowly. Dust, washboard, and soft shoulders are part of the experience.
Use your vehicle as a blind. Many plains animals are habituated to cars but wary of people on foot. Stay inside when possible, pull safely off the road, and use turnouts. Never block gates or private driveways. Respect private property: if a fence is posted or a gate is closed, do not enter. Public lands are patchy, so know before you go. On national grasslands, state wildlife areas, and state parks, follow all posted rules. Keep your distance from wildlife—use binoculars and zoom lenses rather than approaching. Avoid flushing birds, especially ground-nesting species like mountain plover and long-billed curlew. Do not play recorded calls during breeding season. Keep dogs leashed or leave them at home; dogs can stress wildlife and disturb nests.
Be a low-impact visitor. Pack out trash, stay on established roads and trails, and leave gates as you find them. During hunting seasons, wear blaze orange and be aware of active areas; check seasonal regulations. If you find injured wildlife, contact the state wildlife agency rather than intervening. Remember that ethical watching is about preserving the experience for the next visitor and the next generation. The eastern plains are a working landscape, and wildlife watchers are guests. By planning around seasons, respecting access, and keeping your distance, you can enjoy pronghorn, burrowing owls, ferruginous hawks, and the lark bunting without compromising the wildness that makes them worth watching.
