Very nice item. Imperial made a few of these in milk glass in the 1950s or 60s in the shape just as it comes from the mould ... about the size of medium punch bowl. The mould went to Summit Art Glass in the mid-1980s when Imperial closed, and they made a few in opaque brown Chocolate glass. Now that Summit has closed, the mould might be owned by Mosser and/or Rosso Wholesale Glass.
Fenton owns a few of the original Everglades moulds, but not this one. And, don't ask what a Buffalo is doing in the Everglades!