To reach the park, go south from Watford City on U.S. Highway 85 for about 15 miles and turn right (west) at the sign. The headquarters are at the entrance.
The most productive birding spot is Squaw Creek Campgrounds, which is 5.1 miles from the headquarters. There are large trees (mostly cottonwoods) as well as an ample understory in many places. Breeding species include Common Flicker (both Red-shafted and Yellow-shafted, as well as many hybrids), Downy Woodpecker, Willow Flycatcher, Western Pewee (rare), Black-capped Chickadee, Brown Thrasher, Gray Catbird, Red-eyed and Warbling Vireos, Black-and-white Warbler, Ovenbird, Yellow-breasted Chat, American Redstart, Lazuli Bunting, Black-headed Grosbeak, Rufous-sided Towhee (spotted race), and Field Sparrow (open areas adjacent to the campgrounds). This is one of the most consistent locations in the state for finding the chat, bunting, and grosbeak. By making a careful check of the cottonwoods, you should be able to turn up several Common Nighthawks, which rest on the more horizontal limbs during the day.
Besides providing good nesting habitat, the wooded areas and thickets along the river serve to attract numbers of migrants and wintering species. In winter watch for Northern Goshawk (rare), Ring-necked Pheasant (willow thickets), Great Horned Owl, Downy and Hairy Woodpeckers, American Crow, Black-billed Magpie (more-open areas), Black-capped Chickadee, White-breasted Nuthatch, American Robin, Bohemian and Cedar Waxwings, Northern Shrike (willow thickets), Evening Grosbeak, Common Redpoll (willow thickets), and American Tree Sparrow (willow thickets).
Squaw Creek Campground
The rest of the park is mostly short-grass prairie mixed with large patches of sage, rolling hills spotted with junipers, and sharply eroded buttes streaked with colorful veins of clay and mineral deposits. The birds to be found in the open areas are Swainson’s and Ferruginous Hawks; Prairie Falcon; American Kestrel; Golden Eagle; Sharp-tailed Grouse; Black-billed Magpie; Mountain Bluebird; Western Meadowlark; Field, Grasshopper, and Lark Sparrows; and Chestnut-collared Longspur. The Say’s Phoebe and Rock Wren should be watched for (and listened for) around eroded buttes, sharp cuts, and under bridges.
You will probably see few birds in the open areas of the park in winter, but look for Rough-legged Hawk, Golden Eagle, Sharp-tailed Grouse, Gray Partridge (prefers cultivated fields), Snowy and Short-eared Owls, Horned Lark, Black-billed Magpie, Northern Shrike, Western Meadowlark, American Goldfinch, Common Redpoll, and American Tree Sparrow. In early and mid-November Sandhill Cranes pass over the badlands by the hundreds.
The park personnel can provide a detailed list of nature trails. One that merits mention is the Caprock Coulee Nature Trail, which winds through an area of junipers. Even though you will not be overwhelmed with birds, the trail is an interesting one. Look for Golden Eagle, Mountain Bluebird, Rufous-sided Towhee, Field Sparrow, Coyote, and Mule Deer. This trail is a consistent spot for seeing Mountain Bluebirds. Each year there are usually a couple of nesting pairs.
Another trail takes off from the Caprock Coulee Trail and leads over the ridge to a prairie-dog town, where the dogs are much wilder than those of the roadside colonies. Since the colony is somewhat remote, your chances are better for finding a Burrowing Owl. At any rate, you should find Black-billed Magpie, Western Meadowlark, and Field Sparrow.
For a pleasant place to camp, go south on Highway 85 from the park for 4.8 miles and turn right (west) to the Custer National Forest Summit Campgrounds (not deluxe but more than adequate). There is a nice scenic overlook, and you may even find some good birds. Wild Turkeys may be seen in nearby ravines.