The only animals that will cause any action to be taken is the sick and injured ones that have not received medical care. If they have access to food, water, and shelter they wont do much. Animal neglect does not seem to be a very high priority in CA. After doing a little research rabbits are considered livestock therefore the appropriate avenue to pursue is going through the department of agriculture. Here in AZ, neglect and abuse is taken very seriously but you do have to go through the appropriate channels. Try reaching out to this number and ask questions if they can't help you. They will likely send a state veterinarian to examine the condition of the animals.
United States Department of Agriculture
Animal and Plant Health Inspection Services
Veterinary Services
10365 Old Placerville Road, Suite 210
Sacramento, CA 95827
Phone: (916) 854-3950 phone
Fax: (916) 363-1125