Although western Tanzania is well known for Chimpanzee conservation. The ornithological picture of western Tanzania is highly promising with the occurrence of more than 60% of the bird species found in Tanzania. Currently, it has been recorded, 723 bird species out of 1,157 from 94 families are documented. There are around other 40 species believed to occur in the region which is not described. There is a good number of bird species that are only found in western Tanzania. But still Malagarasi Valley offer suitable stopover for migratory birds from Asia, Europe, and America as far as other parts of Africa. The high diversity of habitats from vast Rift Mountains to Miombo woodlands and underground water forest increases the uniqueness of the area and partly explains the high number of bird species.