I got my Blizzards from Shannon Brown a few years back. You will have to ask Shannon where he got them from.
My Blizzards are cal kings. I have bred my Blizzards to quite a few cal kings...and nothing but cal kings have came out. I have heard that theory as well that Blizzards are nothing but albino Mexican Black Kings...but that simply is not the case (at least with mine).
And for terminology, there are no cal kings het for Blizzard. They can be double hets (albino & hypermelanistic-Mendota-Davis). Just like in corn snakes. A corn snake cannot be het for Snow, but is actually a double het (anery & amel). To say that a corn snake is het Snow would assume that if you bred a Snow to a normal, then all the babies would be het Snow..and that is not true. All the babies would be double hets (anery and amel). So in cal kings you CANNOT buy a cal king that is het for Blizzard...in fact if you breed a Blizzard to a normal cal king, then all the babies would be normal looking and they would be double hets (albino & hypermelanistic).
Last year I bred a Blizzard to a Mendota and produced ALL hypermelanistics (that are 100% het albino). "IF" my Blizzard was an albino MBK, then I wouldn't have produced any Mendotas/hypermelanistics.
Now, I was planning on getting a MBK and breeding it to an albino cal king and then breed back the babies to see what would come out....but since I bred my Blizzard to a Mendota last year and produced Mendotas......na...waste of time.
I do have some Splendidas (hypos, albinos & axanthics).
Kerby...
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Lonesome Valley Reptiles
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Specializing In California Kingsnakes