I'm going to look into quail and see if I can pull a fast one on the city. If it isn't specifically mentioned that no quail are allowed, then I'm guessing that I would be in the right. At the very least I can please ignorance. Can't believe this stupid ordinance, its actually really shocking because the majority of the parcels in my quadrant of the city are over an acre. Plus we are less than a 1/4 mile from a farm community which grows the majority of the states hazelnuts. It's just not a fitting or reasonable law, given the area.
I wouldn't recommend trying that argument, but it's your choice. I would liken it to saying "well, there is nothing specifically stating I can't have ostriches or rhinos or giraffes..." Just because it isn't specifically stated as not allowed doesn't imply it *is* allowed.
That said, quail might just fly under everyone's radar, so to speak since they're much quieter.
I would still look into getting the ordnance changed. Do some research here and online elsewhere. You might get surprised and find out someone else is already working on the issue in your city. That's what happened to us - when we started looking into it, we found the owner of a local garden store was already getting things moving with our city council, and already had a group of interested locals coming together.
I wish you the best of luck with this!