Princeton Press publishes an excellent field guide, “The Birds of Kenya and Northern Tanzania”. They have supported Rick’s efforts to develop birding expertise in Kenya, and the Matangwe Bird Club. During the past few years, Rick has taken copies of this book to use and distribute to the people who participate in the birding programs that are run while he is there.
Princeton Press also keep a blog on which they and have highlighted Rick’s trips to Kenya. You can read their most recent update by clicking here.
Their summary of his trip from 2013 can be viewed by clicking here.