S. Müller, 1845,
Has been included in C. poliocephalus and more recently in C. saturatus, but split from latter (using published diagnosis and measurements#R) on account of smaller size (effect size for wing length –5.66; score 3); slightly darker grey coloration above (1); rich buff (usually plain) vs pale (usually barred) undertail-coverts (1); thicker dark bars on underparts (1); higher-pitched territorial song with usually three notes rather than four (2). Bornean population formerly recognized as a distinct subspecies, insulindae, but considered indistinguishable from populations in Peninsular Malaysia, Sumatra and Java. Monotypic.
Peninsular Malaysia, Sumatra (and satellite islands), Borneo, Java, Bali, Lesser Sundas (Lombok, Sumbawa, Flores, Pantar, Sumba, Timor) and Moluccas (Seram).
Food and feeding
Status and conservation
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