Closely related to D. whartoni, which is sometimes considered a race of present species; these two related also to D. pistrinaria and D. pickeringii. Birds of Java Sea sometimes treated as race zamydra, but supposed characters (especially brighter iridescence on upperparts) also found in other populations. Monotypic.
Islands in Java Sea (Seribu Is, Karimunjawa, Bawean, Maselembu Besar, Arends), Bali Sea (Kangean) and Flores Sea (Salayar, Tanahjampea, Kalao, Kalaotoa, Tukangbesi), locally N to Moluccas (Loloda Is, NW Halmahera, Bacan, Tayandu Is, Kai Is), and through most of Lesser Sundas (Satonda, Flores, Besar, Pantar, Alor, Roti, Semau, Timor, Wetar, Kisar, Romang, Leti, Moa, Luang, Sermata, Damar, Babar, Tanimbar).
Food and feeding
Status and conservation
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