Has sometimes been treated as conspecific with Z. flavus, Z. chloris and Z. luteus, and sometimes with Z. palpebrosus. Birds of this species recorded on Lembata (EC Lesser Sundas) of uncertain racial identity, provisionally included in harterti; those from Lucipara Is (in Banda Sea) provisionally included in albiventris. Proposed race intercalatus (Sumba) merged with nominate; griseiventris (Tanimbar Is), bassetti (Damar I) and lettiensis (Leti I) subsumed into albiventris. Species name sometimes emended to citrinellus but this is unjustifed, as citrinella is a noun (and therefore invariable) both by usage and by default#R#R#R. Three subspecies currently recognized.
Food and feeding
Status and conservation
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