I love watching the hawks soaring overhead. :)
I believe this is a Swainson's Hawk, also called a Locust Hawk or Grasshopper Hawk. This morning, one was swooping down to the ground behind the house, probably after the hordes of grasshoppers we have this year. Unfortunately, I couldn't get to the camera quick enough for a close-up picture.
I took these yesterday as the hawk was riding the thermals. We used to see mostly Red-Tailed Hawks around here but the Swainson's Hawks seem to be taking over. What types of hawks do you have where you live?