The Field Guide to the Birds of East Africa by Stevenson and Fanshawe is extremely useful for this part of Africa and covers Kenya, Tanzania, Uganda, Rwanda and Burundi.
Birds of Africa south of the Sahara also covers all the species found in the East Africa region.
Birds of Rwanda by RDB (2011) is a good reference with updated checklist and distribution
Latest page update December 2020.
Helm Field Guide covering Kenya, Tanzania, Uganda, Rwanda and Burundi. The first complete guide to this region. 3400 images of 1388 species illustrated on 287 superb new colour plates by Brian Small, John Gale and Norman Arlott. The text plus distribution map and the illustrations for each species are on facing pages. 632 pages.
Second edition, including 500 new images and 400 updated distribution maps. Unrivalled coverage of African birds in a single volume. 2129+ species covered with an additional 101 vagrants briefly described. Revised to reflect the latest changes in taxonomy. Species descriptions give precise identification features highlighting differences between similar species as well as briefly reporting habitat, status and call. Annotated illustrations portray distinctive plumages as well as diagnostic flight patterns and major geographic variants where applicable.
Field identification guide, with the text highlighting the diagnostic features for each species. For those species that are sexually dimorphic, have both breeding and non-breeding plumages, or in which the juvenile plumage differs markedly from that of the adult, more than one photograph has been included. A thumbnail silhouette and a distribution map are given for each species. 144 pages.
By JP Vande weghe and GR Vande weghe | RDB | 2011 | Paperback | 336 pages, 444 colour photos, distribution maps for 668 species | ISBN 978-2-7466-3490-9 Unfortunately, this very useful book is only currently available in Rwanda. Purchase from Rwanda Development Board Office, National Park Receptions, Bookshops in Kigali (Rwanda).
(Where to Watch Birds, Primates, and Other Wildlife) | By Ken Behrens, Christian Boix & Keith Barnes | Lynx Edicions | 2015 | Paperback | 256 pages, 160+ colour photos, colour maps |ISBN: 9788496553965.
By Michael Mills, Tasso Leventis | Go-Away-Birding | 2017 | Paperback | 544 pages, colour photos, 2 colour maps | ISBN-13: 9780620717250.