Leon has wide expertise in biodiversity conservation with a particular focus on metrics and monitoring, the application of science to policy and decision-making, training staff in biodiversity management, and building the expertise and national content of organisations (especially in Africa).
Leon has three decades of varied experience in biodiversity research and conservation. In East Africa he worked with both Government and NGOs to develop programmes of applied research, monitoring, conservation action and institution-building. That was followed by 12 years leading and co-ordinating BirdLife International’s global work in science, policy and information management, overseeing corporate engagements and developing the Integrated Biodiversity Assessment Tool (IBAT). He speaks fluent Swahili and has authored over 90 scientific papers and books. Leon is originally a tropical ornithologist with professional training is in natural sciences.