Split of all three races as independent species suggested by molecular evidence#R, but morphologically the taxa are fairly similar and some characters (e.g. blue vs green forehead#R, or longer bill and blue-green vs green uppertail in jefferyi compared with nominate#R) not supported by limited material in NHMUK, while available recordings do not suggest vocal differences#R; fuller documentation required. Proposed race dubia (described from Dinagat) seems insufficiently distinct from nominate to be tenable. Three subspecies recognized.
Food and feeding
Status and conservation
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