>>Not much temperature change, just light reduction.
>>What was your regimen?
I don't do anything to them -specifically-, but my home environment is probably a little different than most. I'm in SoCal so warmer than much of the country, but in Orange County, so cooler than most adjacent areas. I don't generally control my home environment except for opening/closing windows so the animals feel a significant amount of the environmental trends. Cage light stays constant but all cages can see the outside and that light varies. I actually add more hours of heat over the winter and reduce it in the peak of summer.
I've had geyri, macfadyeni, and ocellata responding to this. The geyri were quite early in the spring while the macfadyeni and ocellata overlapped in the summer.
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uromastyx geyri (Saharan/Nigerian), hardwickii (Indian),
macfadyeni (Somalian), ocellata (Sudanese), ornata (Ornate), benti pseudophilbyi