Picnonotus [sic] simplex
May warrant placement in a separate genus, alongside some other bulbuls of SE Asia and Sundaic region. Wide individual variation found throughout range. Race halizonus barely distinguishable, and may not be valid; proposed race axanthizus (Natuna Is) included in halizonus. In addition, chloeoides (NW Sumatra), perplexus (N Borneo) and oblitus (Bangka, Belitung and W Borneo) all poorly differentiated, or described on basis of eye-colour morphs; all included in nominate. Three subspecies recognized.
Food and feeding
Status and conservation
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