The actual local law can be found at:
http://www.portlandonline.com/auditor/index.cfm?c=28228
The only question I got about it if I have 3 hens can I also have 3 rabbits, 3 goats, and 3 ducks. Might be a bit much for my 50' x 100' lot. but never having to mow and a slugless garden/lawn (not...