On a parcel of land at Mangaone in Raetihi, in an area that was once an unproductive, narrow, boggy drain bound by strong ridges, co-owners Graeme Berry and Paddy Chambers saw a potential habitat for waterfowl. DU Patron Di Pritt says, “Since Graeme and Paddy Chambers have been involved at Mangaone, from 2004, they have…