I spotted two hawks along the Glen away two days ago, and I'm having some IDing problems.
One of them clearly is a Red-Tailed Hawk
The other one, however, is odd. It looks like a Rough-Legged Hawk without the black tail band. However, if it is a Harlan's Hawk, it's oddly colored. This bird was continually carrying sticks to one particular rock, giving me the impression it's an adult bird making a nest.