Nik Borrow studied painting at Wimbledon School of Art and is responsible for the illustrations and maps in the books. He has a particular interest in the Afrotropics and has been birding in sub-Saharan Africa since 1987, principally leading birding tours, during which time he has travelled extensively throughout the continent. He is currently a member of the East African Rarities Committee, a keen photographer and lives in Norfolk, England.

Ron Demey is a freelance ornithologist who has lived and worked in several West African countries. He has travelled extensively in the region, amassing a considerable knowledge of its avifauna. Ron has worked on several African projects for BirdLife International, participated in Rapid Assessment Program expeditions organised by Conservation International, and carried out various surveys in the Afrotropics. He is currently editor of the Bulletin of the African Bird Club.