After observing the pair of Scissor-tailed Flycatchers adjacent to Highway 67 in Fremont County with Lisa Edwards, Mike Gaylord, Mark Chavez, et. al., I eventually wound up at Lake Pueblo State Park/Rock Canyon area and saw a Black Phoebe immediately below the dam at Pueblo Reservoir. The Phoebe was perched on a dead branch near the wall on the south side of the river. As far as the Black-throated Sparrows, I haven't seen them since 7/5 although others are still seeing them. They seem to be seen more in the morning hours than later in the day.
Good birding!
Chris Knight
Longmont, CO