He has a Diploma in Education (Biology and Chemistry) from the Institute of Teacher Education Kyambogo, now Kyambogo University, a Bachelor of Science Degree (BSc. Zoology and Botany) from Makerere University and Masters in Science Degree (Wildlife Ecology and Management) from the same University. His MSc dissertation explored the Potential Role of Rodents and Shrews in the Transmission of Leptospira Bacteria to both humans and animals in and around Queen Elizabeth National Park (QENP) in South Western Uganda. 

He has a five-year experience of working with government, academia, NGO and private sectors through partnerships and networks. Kigai E.E Bigala has worked on a number of projects looking at Mammals in Queen Elizabeth National Park, Murchison Falls Conservation Area (MFCA) and Semliki Game Reserve. He also worked on a number of Environmental Impact Assessments (EIAs) under the auspices of Uganda Wildlife Authority (UWA), Uganda National Roads Authority (UNRA), Uganda Electricity Company Ltd (UETCL) and TOTAL E&P Uganda. He has attended a number of workshops and conferences both locally and internationally.