From Ucolo Road, driving back to Monticello on the loop from Hickman Flats you will take Old Highway which parallels US-491 just to the south for about 10 miles east to west. Old Highway goes through shrubsteppe, disturbed grassland, farmland, and fragmented mixed juniper and oak woodlands. This road seldom sees traffic except for locals, and you will probably have the drive to yourself. You can stop and go as you'd like, making sure not to wander off the road as most of the land around is private property. Luckily the birding form the road is fantastic.
The Old Highway drive back to Monticello from Ucolo Road makes for some nice late morning birding after spending a morning on Hickman Flats. In the past LEWIS'S WOODPECKER have been seen along this route amongst the more common NORTHERN FLICKER. A real surprise find here in April 2013 was a WILLIAMSON'S SAPSUCKER. The patches of juniper ware excellent for finding JUNIPER TITMOUSE, and in the spring DUSKY FLYCATCHER are usually present. BEWICK'S WREN, CHIPPING SPARROW, and MOUNTAIN BLUEBIRD can be seen while a couple more unexpected finds include: RED CROSSBILL, NORTHERN MOCKINGBIRD, and MOUNTAIN CHICKADEE. Since this location doesn't get really any birders, its worth checking out to see what you might find.
From the intersection Main and Center Streets in Monticello, head east on Center Street for 5.3 miles. Turn left onto Hallers for .3 miles at which point you will turn right onto Old Highway. From here Old Highway continues 9.8 miles till it turns north into Ucolo Road.