Alfred Newton, 1911 Encyclopædia Britannica, Volume 13… (1911)
“ In the meanwhile other species had been discovered, some of them differing sufficiently to warrant Sundevall’s foundation of a second genus, Prodotiscus, of the group. The honey-guides are small birds, the largest hardly exceeding a lark in size, and of plain plumage, with what appears to be a very sparrow-like bill. ”
