Field visits near Debre Berhan with Ray Weil and Kate Tully . Debre Berhan, EthiopiaGelada (Theropithecus gelada, Amharic: ጭላዳ, translit. č̣əlada), sometimes called the bleeding-heart monkey or the gelada "baboon", is a species of Old World monkey found only in the Ethiopian Highlands, with large populations in the Semien Mountains. Geladas are actually not baboons (baboons are all taxonomic members of the genus Papio) but the only living members of the genus Theropithecus.