De Vis, 1890,
Mount Knutsford, south-east New Guinea.
Sometimes treated as conspecific with M. leucostephes and with M. rufocrissalis. Co-occurs with latter on Mt Koimjim (Schrader Mts), but the two appear to exclude each other altitudinally; they hybridize freely, however, where they come into contact; Herzog Mts, much of Eastern Highlands, Mt Goliath (in E Star Mts) and N slopes of Snow Mts may once have supported both species, but hybrid populations now found extensively through these areas (although populations on N slopes of Snow Mts are almost pure individuals of present species, with only a few M. rufocrissalis characteristics). Race griseirostris, previously considered a hybrid form, now shown to be a stable population of hybrid origin#R, meriting recognition#R. Race brassi and nominate race may represent different species, as they occupy much the same geographical range but are separated altitudinally and appear not to intergrade; further study needed. Races joiceyi and kinneari intergrade in W Nassau Mts (Wissel Lakes area). Proposed race stresemanni (Herzog Mts) represents a hybrid form. Six subspecies recognized.
Food and feeding
Status and conservation
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