The Black Bear Green Butt is a traditional Atlantic salmon fly on the rivers of eastern Canada, but it is also popular with Pacific Northwest steelheaders. The pattern’s provenance is a bit murky, but several authorities credit Harry Smith of Cherryfield, Maine, for tying the first Black Bear in the 1920s. Smith’s original was all black, and other tiers added the green and the flash over the ensuing decades. Rest assured that trout will eat this fly, as well.