Okita-Ouma, B.

Shaw, J.; Adcock, K.; Amin. R.; Anderson, N.; Banasiak, N.; Beytell, P.; Brett, R.; Du Toit, R.; Emslie, R.H.; Flamand, J.; Kariuki, L.; Khayale, C.; Muntifering, J.R.; Okita-Ouma, B. 2025. Black Rhinoceros: contrasting conservation actions and outcomes across the continent. [chapter 10]. In: Melletti, M.; Talukdar, B.; Balfour, D. 2025. Rhinos of the world: ecology, conservation and management. Berlin, Springer. pp. 237-273. doi.org/10.1007/978-3-031-67169-2_10

Khayale, C.; Kariuki, L.; Kanga, E.; Omondi, P.; Brett, R.; Oloo, T.; Mulama, M.; Okita-Ouma, B.; Gaymer, J.; Amin, R. 2025. Advancing black rhino conservation in Kenya: milestones and the strategic outlook for sustaining population recovery. Pachyderm 66: 101-110.

Okita-Ouma, B.; Gort, G.; Millspaugh, J.J.; Prins, H.H.T. 2023. Physiological stress in eastern black rhinoceros (Diceros bicornis michaeli) as influenced by their density, climatological variablesand sexes. African Journal of Ecology 62:e13239: 1-13. doi.org/10.1111/aje.13239

Okita-Ouma, B.; Pettifor, R.; Clauss, M.; Prins, H.H.T. 2021. Effect of high population density of eastern black rhinoceros, a mega-browser, on the quality of its diet. African Journal of Ecology 2021 - early view: 1-16. doi.org/10.1111/aje.12893

Khayale, C.; Omondi, P.; Kariuki, L.; Muruthi, P.; Stejskal, J.; Mulama, M.; Okita-Ouma, B.; Gaymer, J.; Chege, G.; Amin, R. 2021. Kenya’s first White Rhino Conservation and Management Action Plan. Pachyderm 62: 112-118.

Okita-Ouma, B.; Langevelde, F.van; Heitkonig, I.M.A.; Maina, P.; Wieren, S.E. van; Prins, H.H.T. 2020. Relationships of reproductive performance indicators in black rhinoceros (Diceros bicornis michaeli) with plant available moisture, plant available nutrients and woody cover. African Journal of Ecology 2020: 1-15.

Khayale, C.; Kariuki, L.; Chege, G.; Sibanda, M.; Mulama, M.; Okita-Ouma, B.; Amin, R. 2020. Progress on the Kenya black rhino Action Plan (2017-2021). Pachyderm 61: 109-119.

Okita-Ouma, B.; Moller, R.; Mijele, D.; Kingengo, N.L. 2016. Preliminary indications of the effect of infrastructure development on ecosystem connectivity in Tsavo National Parks, Kenya. Pachyderm 57: 109-111.

Edwards, K.L.; Walker, S.L.; Dunham, A.E.; Pilgrim, M.; Okita-Ouma, B.; Shultz, S. 2015. Low birth rates and reproductive skew limit the viability of Europe’s captive eastern black rhinoceros, Diceros bicornis michaeli. Biodiversity and Conservation 24 (11): 2831-2852.

Okita-Ouma, B. 2014. Population densities of eastern black rhinoceros: unravelling the controls,. PhD thesis, Wageningen University, Wageningen, NL (2014). pp. 1-156.

Prins, H.H.T.; Okita-Ouma, B. 2013. Rhino poaching: unique challenges. Science Magazine 340 (7 June): 1167-1168.

Cain, B.; Wandera, A.B.; Shawcross, S.G.; Harris, W.E.; Stevens-Wood, B.; Kemp, S.J.; Okita-Ouma, B.; Watts, P.C. 2013. Sex-biased inbreeding effects on reproductive success and home range size of the critically endangered black rhinoceros. Conservation Biology DOI: 10.1111/cobi.12175.

Ndeereh, D.; Okita-Ouma, B.; Gaymer, J.; Mutinda, M.N.; Gakuya, F. 2012. Unusual mortalities of Eastern Black Rhinoceros (Diceros bicornis michaeli) due to Clostridial Enterotoxaemia in Ol Jogi Pyramid Sanctuary, Kenya. Pachyderm 51: 45-51.

Ferreira, S.; Okita-Ouma, B. 2012. A proposed framework for short-, medium- and long-term responses by range States to curb poaching for African rhino horns. Pachyderm 51: 60-74.

Obanda, V.; Kagira, J.M.; Chege, S.; Okita-Ouma, B.; Gakuya, F. 2011. Trypanosomosis and other co-infections in translocated black (Diceros bicornis michaeli) and white (Ceratotherium simum simum) rhinoceroses in Kenya. Scientific Parasitology 12 (2): 103-107.

Okita-Ouma, B.; Heitkonig, I.M.A.; Wieren, S.van; Amin, R.; Prins, H.H.T.; Langevelde, F.van 2011. Population performance indicators as functions of Plant Available Nutrient and Plant Available Moisture in black rhinoceros (D.b. michaeli). Proceedings of the 2011 International Elephant and Rhino Conservation and Research Symposium, Rotterdam 10-14 October 2011: 1194-1208.

Muya, S.M.; Bruford, M.W.; Muigai, A.W.T.; Osiemo, Z.B.; Mwachiro, E.; Okita-Ouma, B.; Goossens, B. 2011. Substantial molecular variation and low genetic structure in Kenya’s black rhinoceros: implications for conservation. Conservation Genetics 12 (6): 1575-1588.

Okita-Ouma, B.; Amin, R.; Langevelde, F.van; Leader Williams, N. 2009. Density dependence and population dynamics of black rhinos (Diceros bicornis michaeli) in Kenya's rhino sanctuaries. African Journal of Ecology 48: 791-799.

Okita-Ouma, B.; Kock, R.; Amin, R.; Kasiki, S. 2009. Proceedings of the East African Community Rhino Management Group inaugural meeting. Nairobi, KWS. pp. 1-34.

Okita-Ouma, B.; Mijele, D.; Amin, R.; Gakuya, F.; Ndeereh, D.; Lekolool, I.; Omondi, P.; Woodley, D.; Litoroh, M.; Bakan, J.; Kock, R. 2008. Minimizing competition by removing elephants from a degraded Ngulia rhino sanctuary, Kenya. Pachyderm 44: 80-87, figs. 1-8, tabs. 1-3.

Vigne, L.; Martin, E.B.; Okita-Ouma, B. 2007. Increased demand for rhino horn in Yemen threatens eastern Africa's rhinos. Pachyderm 43: 73-86, figs. 1-9, tabs. 1-6.

Okita-Ouma, B.; Omondi, P. 2007. Conservation strategy for black rhinos and management guidelines for white rhinos launched in Kenya. Pachyderm 43: 117-119.

Okita-Ouma, B.; Amin, R.; Kock, R. 2007. Conservation and management strategy for the black rhino (Diceros bicornis michaeli) and management guidelines for the white rhino (Ceratotherium simum simum) in Kenya (2007-2011), third edition. Nairobi, KWS. pp. 1-70.

Okita-Ouma, B.; Amin, R.; Adcock, K.; Emslie, R.H.; Kock, R. 2007. A positive turning point in black rhino conservation in Kenya.

Amin, R.; Okita-Ouma, B.; Adcock, K.; Emslie, R.H.; Mulama, M.; Pearce-Kelly, P. 2006. An integrated management strategy for the conservation of Eastern black rhinoceros Diceros bicornis michaeli in Kenya. International Zoo Yearbook 40: 118-129, pls. 1-2, figs. 1-7.