His Profile says "Interior BC Canada". There are more than a few well reputed bow woods from that area from what I hear. Yew would be the first one, ...but they have Apple, Birch, Dogwood, Black Hawthorn, Juniper, Vine Maple, Other maples, and some Oaks. I've never been there, but several of these sound like woods that we see bows made from betimes on this site.
OneBow