It might be possible...shepherds can track... you might be able to teach him to trail a pheasant. No idea on people that train them for that though. One option that comes to mind is maybe swing by your local police detachment and see if you can speak with their dog handler. They might be able to give you a few pointers.
Other than that check out leerburg training videos.
http://leerburg.com
That said, for your purpose you might want to consider buying a field
bred retriever.