Thank you so much for this information.Not to get off the subject of chickens here....but there are laws about your problem. I am a landlord and take my responsibilities seriously.
Consider reading this:
http://dca.ca.gov/publications/landlordbook/problems.shtml
Basically, in CA if your unit is not "habitable" which includes broken/ cracked windows, lack of working hot water, etc, the tenant can notice the landlord and even stop paying rent if repairs are not made (learn more before not paying your rent!!). Buy Nolo's online book titled landlord law to read more.
Also, to report building code violations (which can be done without giving your name) in the case of the 2nd unit near yours (there is no way that unit is a legal second unit) call:
Sonoma County Permit and Resource Management Department
2550 Ventura Avenue � 95403-2829 � Fax (707) 565-1103
Goodluck.
Oh, man! Look at those sweet babies. So much fluffy love.