I don't see many live chicken in the big city. We have lots of pigeons here. 
Dunno if they're still there, but a few years ago there were still a live poulty market in Bohrem Hill in Brooklyn, and I'd think there are still live chickens and other poultry available from various Kosher, Hallal, Hispanic and Chinese purveyors.
And every couple of years there is a beautiful multicolored chicken roaming about Prospect Park in Brooklyn, which gives the park employees a heck of a time chasing it down. There is a 'crossroads' near the park, two intersecting subway lines, which is the preferred place for Vudun sacrifices (I really don't see the difference between praying over an animal, killing it, cooking it and then eating it or killing it, cooking it, praying over it, and then eating it...).
Inevitably, a chicken escapes the ceremony and causes all sorts of hillarity.
http://gowanuslounge.blogspot.com/2007/06/crime-down-but-chickens-running-wild-in.htmlhttp://www.dailyheights.com/archives/587