I've hunted hogs in Ca for over 30 years, did some depredations too prior to Seavers getting many of the contracts. I've hunted hog on the coast near Gualala, in Tehama county,Orland, Napa,Sonoma, just south of Berryessa, mt Diablo, near mt hamilton,S of Patterson, Santa cruz, Watsonville, monterrey,coalinga, hollister, and a few other areas I'm sure I'm forgetting. For those not familiar with Ca, I've hunted the bulk of the state except the extreme far north and south.
Very rare NOT to see some spotted ones in most all of those areas. It used to be (many years ago) on the north coast you would hardly see a spotted one in Healdsburg, Gualala and a bit further north but not anymore. And no such thing as pure Russian strain anymore in Ca either. Think about it, those sows can have 3 litters a year, breeding everything in sight! Move over Lindsey Lohan, no way to keep a clear bloodline with that going on.
Heck even the Tahitian strain on the Hawaiian islands and the pigs in Australian Northern territories had some spotted ones( very few) though both of those places have a more consistent strain than here in Ca.
So.....Probably not much chance now of getting an invite to bow hunt this vineyard nearby......