I so can't answer your question scientifically, but it certainly sounds feasible, they wouldn't have the same amount of UV at all times in the wild, they may wander into shade or depending on the position of the sun it could differ
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Becci
1:2:0 Testudo Hermanni Boettgeri -
Darwin, Galileo, and Einstein.
Archimedes (THB) RIP June, 2018
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