BioStor
 | Captain Angus Buchanan's Air Expedition. IV. The Birds collected by Capt. Angus Buchanan during his journey from Kano to Air or Asben (1921) Novitates Zoologicae 28: 78-141 |
 | Notes on the birds of East Africa V G L Van Someren (1922) Novitates Zoologicae 29: 1-246 |
 | 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 |
 | Revisions of the Mallophaga genera. Degeeriella from the Falconiformes Theresa Clay (1958) Bull. Br. Mus. (Nat. Hist.) Entomol 7(4): 121-207 |
 | A check list of the land and freshwater birds of the western Cape Province J M Winterbottom (1968) Annals of The South African Museum 53: 1-276 |