We first spotted the nest two weeks ago, and the red-shouldered hawk pair finished it about a week later. Now, the female is sitting on the nest, keeping a careful eye on passersby, and calling with her distinctive kerr-kerr sound.
On the days I've been by, I've usually been able to catch a glimpse of her -- unfortunately, the nest is quite high up! I took a few pictures this morning with a long lens, but managed only to get a somewhat blurry shot in my minimal efforts.
In poking around the web looking for information about their nesting and foraging behavior, I came across a great digiscope sequence of a nesting red-shouldered mom and offspring in California.