I got chicks from Privett, not Stromberg. I see a subtle barring in my birds. I think Tommysgirl got her chicks after mine, so maybe they are less defined and appear cuckoo because they are still young. The rooster's feathers tend to be more of a defined pattern than the hens. I'll try and get some pics this week and post them when I have more time.
Oh, sorry. I got the hatcheries switched.
Maybe you should order Barred Leghorns from Privett and see if they are the same as the California Grays.