Rehanis as in the Asfar, Azrak Katifa, Yellows has a small grainy beaks and elevated foreheads. The color contrast is striking and not easy to achieve.
My mix presentation focus on a group Mix between the first two groups that got introduced to the west from Egypt, namely Otati and Rehani. The second Mix picture has a different approach, but still the same results. The third example is a disturbing youtube illustrating, a clear cut homing pigeon cross to may be a second generation Rehani ? but watch the video after that, you need not the understand, but it presents a high quality Swifts.
It is clear that many fanciers were trapped in thinking the Otatis and Rehanis are the same bird, or even the entire groups as one group. My massage for you is to be aware and know the difference.