I didn't see hide nor hair of the bluebirds during that time. Yesterday, when I returned home after running some errands, my husband greeted me at the door with the news that he had seen the female with a rather large twig in her beak, and felt it was just too large to get through the hole in the box. As he watched, she manipulated the twig, turning it the long way, and eased it into the box. This morning, as I went out to do my birdwatching I discovered that two pair are bringing nesting material into the box closest to my house, and I am at a loss to explain why. I'll just have to keep watching.
Facilities are new and outstanding with showers, laundry, fish cleaning, etc.
The lake has a launch ramps and marina. There is a complete picnic grounds, and swim beach and group facilities. There are over 10 miles of fully developed walking trails and all types of camping from RV with full hook ups to tent pads. The Park is open year around but main season is April 1 to Oct 1. Jack has been doing the volunteer deal for many years, even worked for the Forest Service for several years.