In general, Philbyi's sex is very easily identified, the more mature the body color performance of the male will become more obvious and more strong. This is also one of the interesting point that we love them. But they takes about 2 to 3 years to reach maturity, this slightly longer than the average; mature male have more gorgeous blue color.
Breeding Philbyi is slightly difficult than others, generally in the Spring time when warmer weather in April, the male will have the courtship behavior, courtship and chased around the female and in mating male will bite on the back neck of the female, after about 2 months the female will lay 5 to 12 eggs depends on the mature level. You could provide a hiding boxes with some substrate in the environment as the female breeding place. The eggs need to put into an incubator with 31'C, humidity 75 to 90 percent. And the hatch period ranging from 70 to 90 days.
About their diet, we're feeding greens as the main diet with some seeds/flowers occasionally.They are also very interested in the green beans and a variety of seeds, because their staple food in the field is the stems and leaves and seeds of the plant-based. While the rearing environment of the substrate layout, you can refer to the recommendations described below.
Uromastyx Philbyi is still not popular among the Uromastyx breeders. Since they are not common in the market and often with bad the Male/Female ratio. Till recently (early 2012) there is first legale import to Europ by the expert in Swiss. And hope there will be more and more Captive-Breed ones in the market and let people know this beautiful animal.