The East Cascades Audubon Society has created the Central Oregon Bird Nests and Young website. Check out the beautiful photos at https://www.ecaudubon.org/nestseggsandyoung. I'm happy to see my Clark's nutcracker nest photos on the site!
Here is a the informative PDF of Lorenz, Teresa. 2009. “Final Report: Clark’s Nutcracker Habitat Use and Relative Abundance in the Cascade Range. Prepared for the Seattle City Light Wildlife Research Program. Report on File with: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory, Missoula, Montana.” Seattle City Light Wildlife Research Program. *Seattle City Light no longer includes its reports on its website, and so, although it is in the public domain, it is difficult to access.