Hitherto treated as conspecific with P. duvaucelii and P. australis, and closely related to P. eximius, these together comprising the so-called Mesobucco group. Differs from duvaucelii on account of blue vs black ear-coverts (3); more extensive and darker green-blue throat (same shade as in australis), with little or no blackish lower throatband (2); red-and-yellowish-white (at any except close distance pink) vs red cheek patch (1); slightly larger size with distinctly longer tail (effect size of cyanotis 3.48, of stuarti 1.02) (1); narrow zone of hybridization (2). Differs from australis on account of black vs blue forehead (2); red rear supercilium, cheek patch and lower submoustachial area vs green, yellow and green, respectively (3); more extensive green-blue throat with no yellow or blackish lower throatband, but with some black irregularly inside it (2); blue vs green ear-coverts (ns). HBW indicated that birds from S Myanmar and SW & peninsular Thailand are often treated as race stuarti but are apparently intermediates between cyanotis and duvaucelii; here, however, stuarti accepted as valid subspecies, having deeper red postauricular and postmalar spots and being somewhat smaller than nominate cyanotis (with tail shorter), intergrading with P. duvaucelii in S peninsular Thailand (NHMUK material) and NW Malaysia#R. Some authors suggest that race orientalis possibly better lumped within nominate cyanotis. Other described form invisa from NW Thailand synonymized with cyanotis. Form described from Assam as robustirostris for long considered a separate species, but apparently matched by specimen from Laos, and these probably represent immatures of present species. Three subspecies currently recognized.
Food and feeding
Status and conservation
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