A fowl brought up in the streets of an urban region of the United States, usually associated with a gang of other urban chickens. Caution: These foul can be extremely deadly if approached or attempted to be eaten. If you are attached or marked then you will become "tagged" as one of them forever. Beware!
George: I was walkin' home last night from the train station and came up on a gang of Urban Chickens! I tried to dodge them, but they already saw me and chased me down and pecked their gang sign into my forehead.
Steve: Wow George, I can see the mark on your forehead, it looks like it says UCFL.
George: Yeah, they said it means Urban Chicken For Life and that I am not one of them.