AB 202 is sponsored by the AR groups Avian Welfare Coalition (http://www.avianwelfare.org/welcome.htm) and the Animal Protection Institute (http://158.222.97.184/default.asp).
Here is some information from their websites. Keep in mind that the language would be toned down somewhat since they are trying to appeal to the public there.
Avian Welfare Coalition's - Position on Birds
Like dogs and cats, birds are now facing an epidemic of overpopulation and homelessness. There are not enough homes especially good homes for every bird bred! Thousands of birds are displaced each year simply because their caretakers can no longer provide the time and attention they require either because they were not educated about bird care or because their lives and interests change. The least fortunate unwanted birds are passed from home to home before dying from neglect or abuse, or they are euthanized. The lucky ones end up in shelters to await adoption or in sanctuaries to live out their lives on their own terms. These shelters and sanctuaries are filling up fast! You can help solve this problem by not breeding birds and by adopting a displaced bird rather than buying one from a pet store or breeder if you are ready to make a lifetime care commitment. Bird rescue, adoption, and sanctuary organizations can also use volunteers and donations to help care for their birds. Spread the word about bird overpopulation and adoption to your fellow bird lovers. Thousands of homeless parrots and other birds will thank you!
The Animal Protection Institute's - Position on Birds
Unlike with cats and dogs, very few people are capable of providing adequate lifetime care for birds. Captive birds frequently suffer from captivity-related stress, leading to behavioral and physical problems. Birds sold as pets also very commonly suffer from nutritional diseases through the ignorance of those who purchase these exotic animals. Whether due to frustration, disinterest, or concern, many people attempt to rid themselves of the responsibility of caring for their birds. As a result, exotic bird sanctuaries across the country are overwhelmed with hundreds of unwanted and abused birds in need of rescue and life-long homes, while untold thousands more languish deprived and ignored in their cages because their "owners" have lost interest in them. All changes in public attitudes and behavior toward animals must eventually be reflected in our laws. Very few citizens take the time to communicate with their elected officials, so it's possible to have a great influence on the outcome of policy decisions. Politicians consider one piece of communication from 1 person as representing the view of 100 people!
Both of these organizations are radical animal rights groups whose aim is to eliminate your ability to keep pets. The language of AB 202 certainly supports this goal. Notice how the word owners above is in quotes? These people do not believe that animals should be owned.