I don't know why the Beja often imitate animal dances.. I think its traditions are ancient and millennial in Eritrea for exemple the Beja clan Hidareb often imitates ostrich dances ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-FcaxAQFbtzw.htmlfeature=shared❤