Summary

Alfred Newton 1911 Encyclopædia Britannica, Volume 21… (1911)

It “breeds true”, but occasionally a presumably pure stock of birds of the usual coloration throws out one or more having the Japan plumage. It is to be observed that the male has in the coloration of the parts mentioned no little resemblance to that of the second indubitably good species, the P. muticus (or P. spicifer of some writers) of Burma and java, though the character of the latter’s crest—the feathers of which are barbed along their whole length instead of at the tip only—and its golden-green neck and breast furnish a ready means of distinction.
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