Nest building continues every day. The size of the nest has grown quite a bit with sticks and live evergreen branches. You can see the size change in the following 2 photos:
This shot was taken on March 21, 2007:
This shot was taken on April 2, 2007:
The hawks are active every day working on there nest and mating. I missed the mating shots but I did get to witness it a couple times which was quite cool. Here's another shot I got today that I really liked: