Got downtown about 7:15 and while walking from Garry to Smith spotted one on the ledge and one on the N. Stopped at Smith to have a look at the one on the ledge and it had a golden breast and brown coloring and was a fair size. Assumed it to be Vesper. Walked to parking lot and looked around for a bit. Joined by Jill for a few minutes, then Vera and Ted came. Vera and I were watching and saw the one (Vesper) from the ledge fly off heading in our direction and did a fly by right over us and then circled around a couple of times and landed on the louver at the top of the building. Also observed her fly back and forth from the ledge to a southside window sill. There was one on the Roger's building and saw one fly from the parkade. Saw one the parents soar on high heading eastward and out of sight. We were joined by Bunny and her beau, Ellie and her man. At one point we had spotted all five, but only once. Usually we could nail down four. Good night for watching. Forgot to mention saw prey brought in, defeathering, listened to squawking, and saw prey being removed from ledge.