For those who are maintaining flocks in California, Prop 2 will certainly create some confusion as to how they will continue to produce eggs in an efficient way. The Poultry Science Association (poultryscience.org) went on record stating that there is no scientific evidence that current production practices are detrimental to poultry flocks. Other studies have determined that due to this passage major losses in farm revenues will be seen as production leaves the state.
IMHO I think that cooler heads need to prevail. Nobody I know who cares for these animals wishes to see animals abused. It is a fact that farm animals that are stressed in any way are very unproductive. So, it is in the interest of producers no matter which system of production used to do the best job possible.