Modeled proportions of California condors dying from lead poisoning during the period 2005–2007, and equivalent annual death rates, under various scenarios for the reduction of exposure to spent lead ammunition.

The scenarios represent the 2005–2007 pattern of exposure (“As now”), the recent pattern, but with the effects of the program to reduce lead exposure at Kaibab Plateau (Arizona - AZ) removed (“No reduction program”), and with the average proportion of reduction of lead exposure at achieved at Kaibab plateau in 2005–2007 applied to both Kaibab Plateau and North zones (Utah – UT)- this scenario is called “UT reduction as in AZ now”).