Birds of the Horn of Africa is an extremely useful field guide which covers Djibouti, Eritrea, Ethiopia, Socotra and Somalia. The first edition was published in 2009 and the second edition in 2011.
Birds of Africa south of the Sahara also covers all the species found in the Horn of Africa region.
It may also be possible to use a combination of east African and Palearctic field guides. These will cover many of the species found in this region but will miss those which are endemic to the region.
This is the first field guide to the birds of this fascinating region, and a companion to Birds of East Africa by two of the same authors. Over 200 magnificent plates by John Gale and Brian Small illustrate every species that has ever occurred in the five countries covered by the guide (Ethiopia, Eritrea, Djibouti, Somalia, Socotra), and the succinct text covers the key identification criteria. Special attention is paid to the voices of the species, and over 1000 up-to-date colour distribution maps are included. This long-awaited guide is a much-needed addition to the literature on African birds and an essential companion for birders visiting the region.
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.