Here is an article I found with what the author believes is the top 5 WMA for pheasants. It also give a little history of pheasant in NJ.
http://www.midatlanticgameandfish.com/hunting/pheasant-hunting/at_aa120604a/index1.html
http://www.midatlanticgameandfish.com/hunting/pheasant-hunting/at_aa120604a/index1.html