Horn of Africa periodic monsoon winds and irregular rainfall. Mean daily maximum temperatures range from , except at higher elevations along the eastern seaboard, where the effects of a cold offshore current can be felt. Somalia has only two permanent rivers, the Jubba and the Shabele, both of which begin in the Ethiopian Highlands. About 220 mammals are found in the Horn of Africa. Among threatened species of the region, there are several antelopes such as the beira, the dibatag, the silver dikdik and the Speke's gazelle. Other remarkable species include the Somali wild ass, the desert warthog, the hamadryas baboon, the Somali
Horn of Africa Bantu groups also speak variants of the Niger-Congo Swahili and Mushunguli languages. The countries of the Horn of Africa have been the birthplace of many ancient, as well as modern, cultural achievements in several fields including agriculture, architecture, art, cuisine, education, literature, music, technology and theology. Ethiopian agriculture established the earliest known use of the seed grass teff ("Poa abyssinica") between 4000–1000 BCE. Teff is used to make the flatbread injera/taita. Coffee also originated in Ethiopia and has since spread to become a worldwide beverage. Ethiopian art is renowned for the ancient tradition of Ethiopian Orthodox Christian iconography stretching back