I guessed this would be the place to put this. It shows what their study found and suggested actions. Calif. pheasants are in the tank. Much worse than almost anyplace else with historic good numbers.
https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=106141&inline
https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=106141&inline