That excerpt is from this Chapter (linked below) by Shimelis Aynalem; who has also written a book entitled "Birds of Lake Tana Area, Ethiopia: A Photographic field guide". As far as I am aware, this is the only book written on the aviafauna of this area.
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RT @SpringerEnviro: Congrats to Krystina Stave at #AESS2017! New #ebook on social-ecological system dynamics of Lake Tana Basin, #Africa ht…
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RT @SpringerEnviro: Congrats to Krystina Stave at #AESS2017! New #ebook on social-ecological system dynamics of Lake Tana Basin, #Africa ht…
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RT @SpringerEnviro: Congrats to Krystina Stave at #AESS2017! New #ebook on social-ecological system dynamics of Lake Tana Basin, #Africa ht…