Chickens are a key component species of many a permaculture design. They provide many useful outputs (poop, eggs, meat, amusement, etc) in a compact space, as well as consuming much of our food waste.
Longmont apparently does not allow backyard chickens currently (see section 15.04.030 "Accessory uses" of the Longmont City Code). But now there's an online petition, a yahoo group, and a blog trying to convince the city council to change this rule.
If you're interested, get involved.