Los Angeles, CA
 Layman's version:
Chickens may not be within 20 feet of owner's residence, and must be at least 35 feet from any other dwelling. Only one rooster per household.
 The Urban Chicken ordinance on the books:
Link to municipal code online: Los Angeles County Code, Title 10: Animals
Text of municipal code:
10.32.040 Livestock and poultry at large deemed misdemeanor--Exceptions.
A. Every person owning or having charge, care, custody or control of any pig, pygmy pig, hog, cow, bull, steer, horse, mule, jack, jenny, hinny, sheep or other livestock, including poultry, is guilty of a misdemeanor, who wilfully or knowingly permits or, through failure to exercise due care or control, allows:
1. The same to run at large upon any highway, street, lane, alley, court or other public place; or
2. To enter or remain in or upon any land owned by any person, other than the owner of such animal, unless the person in charge of such animal has in his possession the consent in writing of the owner or lessee of such land.
B. This section does not apply to any recreational use upon uncultivated or unimproved land. (Ord. 92-0110 § 5, 1992: Ord. 9454 § 1 (part), 1967: Ord. 8043 § 12 (part), 1961: Ord. 4729 Art. 7 § 703, 1946.)
10.32.050 Livestock--Owner liability for service charges.
The owner or other person having custody or control over livestock shall be liable to the county for the salary, costs and other expenses incurred by the department’s personnel when used for the restraining, capturing or rescuing of said animals. The salary, costs and expenses shall be determined by the director with the concurrence of the county auditor-controller. (Ord. 85-0204 § 17, 1985: Ord. 11771 § 6, 1978: Ord. 4729 Art. 7 § 708, 1946.)