R.B. & Sorenson, M.D. (2003): Phylogenetic relationships of African sunbird-like warblers: Moho Hypergerus atriceps, Green Hylia Hylia prasina and Tit-hylia Pholidornis rushiae. Ostrich 74(1-2): 8-17. PDF fulltext Bird families Taxa named by Per Alström Taxa named by Per G.P. Ericson Taxa named by Per Sundberg (ornithologist) Taxa named by Urban Olsson