The Pūkorokoro Miranda Naturalists’ Trust signed a partnership agreement with the reserve in 2004 and since then joint surveys with reserve staff have shown Yalu Jiang Estuary to be the most important staging site on the EAAF for migratory shorebirds with at least 250,000 passing through the area during northward migration (March–May). This report outlines the results of nine surveys that occurred between 1999 and 2010.