The dataset represents 501 mammal records. This include 213 occurrence records of mammal species recorded in a field expedition undertaken in mid Tana River Basin (TRB) ecosystem (Bangal, Garissa, Bura and Hola), in between 1st to 7th November 2019. A total of 38 different small and medium sized mammal species of 11 orders were recorded from above expedition. Order Cetartiodactyla (Even-toed Ungulates), Carnivora (Carnivorans) and
Primates (Primates) were the most common. Of the 213 mammal observations counted in the entire study areas, the sightings of Kirk’s Dik-dik (Madoqua kirkii) were the most abundant followed by Yellow Baboon (Papio cynocephalus). Three groups of Reticulated Giraffe (Giraffa camelopardalis reticulata) cumulatively of 35 animals, were observed in between Garissa to Bulanandir-Kora Kora. The rangeland in the study areas (Bangal, Garissa, Bura and Hola) was devoid of large and medium sized mammals, probably because of illegal bushmeat hunting, highly degraded habitats by livestock overgrazing and continuous invasion by the exotic Prosopsis juliflora bushes. An additional, 288 records of stuffed skins/skulls were retrieved and digitized from specimens collected and preserved at the Mammalogy Section lab, National Museums of Kenya (NMK). These specimens were mainly of small mammals (rodents, shrews and bats) collected in different localities within the entire Tana River Basin (TRB) ecosystem in between 1903-2015. The most dominant were individuals of the Order Rodentia (210), followed by Soricomorpha (white-toothed Shrews (22) and Order Chiroptera (bats (21). This information underscores the importance of the entire TRB ecosystem for the conservation of mammal biodiversity in Kenya.
