In my happy little gentrified neighborhood, I have people who are keeping urban chickens.
Thankfully, they tend to stay where the organic hipsters feed them, but they're often too damn dumb to get out of the street... The hipsters haven't figured out that you need both a significant fence (for your 30x50 back yard) AND skill at trimming the wing feathers. Which involves catching them.
In other news, neighborhood free-roaming cats, possums, etc., have been looking significantly fatter.