The Missoula Urban Fowl Subcommittee is meeting next week to discuss the first draft of a pro-urban chicken ordinance. This ordinance, if the draft is approved, would then go to a vote in front of the whole city council (I think). Here is the wording of this first ordinance draft, care of one of the UFS members. This part follows a general no livestock in the city section of the Missoula city ordinances, hence the "prohibition in this section" verbage in the first sentence.
F. The prohibition in this section also does not apply to the keeping of up to 6 chickens within the city limits in situations in which the animals are kept in such a manner that the following standards are complied with:
1. No person shall keep any rooster.
2. The chickens must be kept on a single-family lot, unless all parties who share a multiple-family lot consent to allowing the chickens on the premises.
3. The chickens shall be provided with covered, predator-proof housing and must be kept in a covered or fenced enclosure at all times.
4. No enclosure shall be located closer than 25 feet to any residential structure occupied by someone other than the chicken owner, custodian, or keeper.
5. The enclosure must be thoroughly ventilated, of sufficient size to admit free movement of the chickens therein confined, and be at least 2 square feet per chicken in size.
6. No person shall slaughter any chickens within the city limits.
7. Feed must be kept in a rodent- and predator-proof container. The management of chickens and their feed shall comply with Ordinance 3330, Chapter 6.02.
8. It is unlawful for the owner, custodian, or keeper of any chicken to allow the animal(s) to be a nuisance to any neighbors, including but not limited to: noisome odors from the animals or their enclosure; and noise of a loud and persistent and habitual nature.
9. If a chicken owner is in violation of these standards, the mechanism for enforcement is as follows:
...i.Upon receiving a complaint of a possible violation at any given address within the city of Missoula, Animal Control will respond and leave a notice of violation/warning and/or a verbal warning with the chicken owner or temporary owner and provide them with written or oral information on how to correct the alleged violation.
...ii.Animal Control will revisit the chicken owner’s address 10 days or more after the notice of violation/warning is issued. If the chicken-owner has failed to comply with the ordinance, Animal Control may issue a citation to the owner, custodian or keeper of a chicken for failure to comply with any applicable section of this chapter. At this time, Animal Control may also confiscate the chickens without a court order. Animal Control may also recommend to the court that the chicken owner lose the right to keep any other chickens for 1 year or more.