Two are just visible here: one toward upper right of photo, one toward lower left. (At the time, I had just seen four of them in flight). Awful photos - taken in haste through the window of a city bus at an intersection, just after realizing what I was seeing! I have absolutely no doubt of the identification: I saw them clearly when in flight, before they landed in the pine trees seen here, and saw the yellow tail feathers on one of them when it took off.