Birds of Western and Central Africa: (Princeton Illustrated Checklists)

This book may be an older version but the countries it covers are pretty amazing!  The territory covered is vast–nearly 2,500 miles down the coast and over 1,000 miles inland, including not only Senegal, Nigeria, and the Democratic Republic of Congo but all or part of Benin, Burkina, Cameroon, Cape Verde, the Central African Republic, Chad, Congo, Côte d’Ivoire, Gabon, The Gambia, Ghana, Equatorial Guinea, Guinea, Guinea-Bissau, Ghana, Liberia, Mali, Mauritania, Niger, Príncipe, São Tomé, Sierra Leone, and Togo.

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