Togian White-eye

The Sulawesi region is believed to have at least 9-10 species that are found in isolated islands. This isolation has led to speciation with differences in morphology and vocalizations. This new species is most similar to the black-crowned white-eye (Zosterops atrifrons) but lacks the white eye ring which is narrow but conspicuous even in juvenile black-crowned white-eyes. The Togian white-eye has a less extensive black cap, clearer yellow throat, distinct pale base to the bill and reddish (brown in the black-crowned) iris. The species is separated from Zosterops surdus of the west-central Sulawesi by the paler and brighter olive above and clearer yellow on the throat. It differs from Zosterops subatrifrons of Peleng and Banggai Islands by the lack of the white eye ring, greyer breast and less extensive black crown. Zosterops anomalus of southern Sulawesi also lacks a white eye ring but it has tiny white specks around the orbital skin. Differences in the pitch and modulation of the song of Z. somadikartai are noted in comparisons with other Zosterops species known from the region.