Naming
Subspecies accepted by the International Ornithologists' Union as of 2014 are:⤷ ''C. m. peninsularis'' S.A.Parker, 1981 – southern Thailand and the Malay Peninsula
⤷ ''C. m. albifrons'' – Sumatra and western Java
⤷ ''C. m. aheneus'' – Borneo and the southern Philippines
⤷ ''C. m. jungei'' – Sulawesi, Flores and Madu Island
⤷ ''C. m. rufomerus'' Hartert, 1900 – Lesser Sunda Islands
⤷ ''C. m. crassirostris'' – considered by some authorities as a separate species. Found on Babar, Kai and Tanimbar Islands
⤷ ''C. m. salvadorii'' – Babar Islands
⤷ ''C. m. misoriensis'' – Biak
⤷ ''C. m. poecilurus'' G.R.Gray, 1862 – coastal New Guinea and northern Queensland
⤷ ''C. m. minutillus'' Gould, 1859 – northern Australia
⤷ ''C. m. barnardi'' Mathews, 1912 – eastern Australia
⤷ ''C. m. russatus'' Gould, 1868 – - formerly considered by some authorities as a separate species. Found in north-eastern Australia, New Guinea
References:
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