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Publications (7)      

1. Abrha, Abadi M., Kai Gedeon, Shimelis A. Zelelew, Guesh N. Haile, Habtu K. Nigus, Assefa Hidgot, Mengesha H. Siyoum, Ziada A. Abdelwahab, Mebrahtom Nguse, Berhe G. Weldetnsae, Hailemariam Gebrewahed & Till Töpfer. 2023 A consolidated checklist and new avifaunal records for southern Tigray, Ethiopia Bulletin of the British Ornithologists’ Club 143(4): 464-478.
2. Gedeon, Kai, Chemere Zewdie & Till Töpfer. 2017 The birds (Aves) of Oromia, Ethiopia – an annotated checklist European Journal of Taxonomy(306): 1-69.
3. Gedeon, Kai, Olaf Jahn & Till Töpfer. 2022 The taxonomic status of Crimson-crested Turaco Menelikornis (leucotis) donaldsoni. Bulletin of the British Ornithologists' Club 142(3): 343-353.
4. Sigwart, Julia D., Matthias Schleuning, Angelika Brandt, Markus Pfenninger, Hanieh Saeedi, Thomas Borsch, Eva Häffner, Robert Lucking, Anton Güntsch, Helmuth Trischler, Till Töpfer & Karsten Wesche. 2025 Collectomics – towards a new framework to integrate museum collections to address global challenges Natural History Collections and Museomics 2: 1-20.
5. Töpfer, Till. 2006 Erratum [Töpfer, T. (2006) The taxonomic status of the Italian Sparrow Passer italiae (Vieillot 1817): Speciation by stabilised hybridisation? A critical analysis. Zootaxa, 1325, 117–145] 67-68.
6. Töpfer, Till. 2006 The taxonomic status of the Italian Sparrow — Passer italiae (Vieillot 1817): Speciation by stabilised hybridisation? A critical analysis. Ornithology, Arachnology and Asian Mountain Ranges—A Tribute to the Work of Prof. Dr Jochen Martens.(1325): 117-145.
7. Töpfer, Till. 2013 The type series of Chloris sinica tschiliensis Jacobi, 1923 (Aves, Fringillidae) Zootaxa 3609(2): 248-250.