Thanks. It is a great place. We were there for one day and we saw both black and grizzly bears plus nearly all of the major ungulates. The one thing we were hoping for but never came across were wolves.
I too was there for the single day, and I think that I have a few photos uploaded in the ZooChat gallery from May of 2006. Like you my wife and I saw all of the major ungulates, including hundreds of bison, and 2 black bears. No grizzlies though.