The Golden Bison symbol appears during the Free Spins session, which pays and acts the same as regular Bison symbols.
However, any Golden Bison symbol part of a winning combination accumulates to the Golden Bison counter at the top. The following are triggered based on the Golden Bison count:
3 or more Golden Bison - all Eagle symbols appear as Bison symbols for the remaining Free Spins
7 or more Golden Bison - all Cougar symbols appear as Bison symbols for the remaining Free Spins
10 or more Golden Bison - all Wolf symbols appear as Bison symbols for the remaining Free Spins
12 or more Golden Bison - Win the Jackpots during a single feature
20 or more Golden Bison - win the highest Jackpot