BioStor
 | Vögel von Schoa und Süd-Äthiopien Oscar Neumann (1905) Journal für Ornithologie 53(1): 184-243 |
 | Notes on the birds of East Africa V G L Van Someren (1922) Novitates Zoologicae 29: 1-246 |
 | Scientific results of a fourth expedition to forested areas in East and Central Africa. Birds (1942) Bulletin of The Museum of Comparative Zoology 89: 217-275 |
 | Zoological results of a fifth expedition to East Africa. ll. Birds from Nyasaland and Tete J L Peters and A Loveridge (1953) Bulletin of The Museum of Comparative Zoology 110: 87-139 |