Not my novel, mind you, and not Neirin either (although he will reappear in the next book), but the falcon at the bird feeder. He (or she) didn't arrive in pursuit of sparrows this time, just flew down and perched on the cross-bar of the clothesline and sat there for a couple of minutes looking around. This gave me a better sense of scale than I had the first time, and led me to rethink my identification: I think it's a peregrine falcon! Unlikely to have two different hawks a week apart, and I know there are peregrines in Denver, originally introduced downtown to keep down the pigeon population. Explains the occasional excess of pigeon feathers (and once, gobbets of pigeon) I've seen around the feeder from time to time.