Based on my armature internet research, I think we both have White Hollands, because they have similar mature weights and growth rates to Spanish Blacks. Midget Whites are like half the size at maturity and grow more slowly, like 50% slower.
I have the same mystery going on. I have a black Spanish tom, a black Spanish hen and two white hens that are either midget whites or white Hollands. They are all almost 4 months old and the white birds have always been noticeably smaller than the black Spanish turkeys, does that help determine...