It's funny how the birds have adapted to a city that once was a thriving metropolis and now is a destroyed shell of a city. They bulldozed hundreds of city blocks to keep out the crack heads & squatters and wildlife came pouring back in. They have deer, fox, songbirds in abundance now living there.
New Jersey doesn't put the effort into closing certain areas to let the birds establish, here it's about dollars not restoration. In Detroit the only Urban hunting that goes on is human. If they didn't slash & burn all the fields every year it would give them cover to nest and raise the chicks , those birds need cover but thick cover doesn't convert to dollars for guys complaining that it's too thick to hunt!
I grew up in Southern Ontario 40 minutes from Detroit, it use to be the Pheasant capital of Canada, just like South Dakota but as the cover was destroyed fence lines went from being 20-25' wide to 3' due to farming practices and high cost of production. The birds literally disappeared in 3-5 years down to nothing. We use to see 40-60 wild birds in a 2 hour hunt down to 1-2 in a week.
It doesn't take alot of effort it takes commitment the birds just like the deer will thrive but the human mindset needs to change.