Hmmm...the link that Sorcha gave pointed to the Fiddlers' Companion, which stated that Chinquapin Hunting was in A, by Hiram Stamper, which was recorded by Chad Crumm, of the Chicken Chokers. The fiddle is probably in cross-key A. Art Stamper recorded it in standard tuning in D. When I listen to Will Keys play his version, it sounds like the same tune to me.