Eldorado Canyon State Park. Red-tailed hawks, prairie falcons, and golden eagles nest in the steep cliffs of Eldorado Canyon State Park. Owls, chickadees, nuthatches, and woodpeckers are at home in the pine forests along South Boulder Creek in the park. Wild turkeys have been sighted in Crescent Meadows. 9 Kneale Rd., Eldorado Springs, CO, 80025. 303/494–3943. www.parks.state.co.us/Parks/eldoradocanyon. $8 per vehicle.
Walden Ponds Wildlife Habitat/Sawhill Ponds. This former gravel quarry attracts songbirds, waterfowl, and raptors. Nearly 3 miles of groomed paths encircle and connect the area's 20+ ponds and lead into wooded areas along Boulder Creek, where owls roost. April to May is when most birds migrate through the Front Range, although the ponds have plenty of year-round residents. Jay Rd. and N. 75th St., Drive north on 28th St. (U.S. 36) and turn right at Valmont Rd. Drive east 4 miles and turn left at 75th St. Sign marking ponds is about ½ mile farther, Boulder, CO, 80301. Dawn–dusk.