Recent mtDNA study suggests that present species is closest to C. canorus, the two being a sister-clade to C. gularis and C. rochii#R. Name horsfieldi used for Palearctic populations, but this has been shown to be inappropriate and name optatus reinstated#R. Form optatus/horsfieldi often regarded as a separate species, as in HBW, because the songs of the two were considered distinct; recent evidence, however, suggests differences minor and within range of variation of nominate saturatus. Until recently, C. saturatus (with or without optatus/horsfieldi) treated as conspecific with C. lepidus (see below). Two subspecies currently recognized.
Food and feeding
Status and conservation
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