Berber calendar December - 13 January), and 20 "black nights" (Berber: "iḍan tiberkanin/isṭṭafen", Arabic "al-lyali al-sud"), beginning on the first day of "yennayer", corresponding to the Gregorian 14 January. The first day of the year is celebrated in various ways in the different parts of North Africa. A widespread tradition is a meal with particular foods, which vary from region to region (such as a couscous with seven vegetables). In some regions, it is marked by the sacrifice of an animal (usually a chicken). In Algeria, such a holiday is celebrated even by many people who don't use the Berber calendar in
Ethnic groups in Burundi allocated to the Twa. Burundi has institutionalized its social segmentation through ethnic power-sharing with the aims of more accurately representing the population and avoiding another genocide. A significant number of recent immigrants live in Burundi. Most come from neighbouring Central African countries (especially the Congo, Tanzania, and Rwanda) but other come from West Africa. There are also European and Asian communities in the country numbering approximately 3,000 and 2,000 people respectively. Ethnic groups in Burundi Native Burundians belong to one of the three major ethnic groups in Burundi: the Hutu, Tutsi, and Twa peoples. The historical origins of ethnic differentiation