What about striking T. s. infernalis? As you leave Humboldt County going south, you get specimens with brighter red heads. South of the Klamath River (No. Humboldt) you begin to see the effects of an intergrade zone with T. s. fitchi. The older guide books place the limit of fitchi at north of the mouth of the Klamath River and infernalis at south of the mouth of the Klamath. Intergradation has taken a strong hold on the southern side; and fitchi's black head is travelling south. This is NATURE doing its thing. In this case it may be natural for infernalis' bright red heads to eventually be bled over with black pigments further south in the distant future. Once again, it is not for us to decide this course (intentionally or by accident), but this may be the outcome.