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Paramythia montium De Vis, 1892
Family: ParamythiidaeGenus: Paramythia
Highly distinctive passerine; feathers of crown elongated, forming flattened, erectile crest. Nominate race has forehead, forecrown, crest, face and bib on upper breast black, hindcrown to nape whitish to pale grey (usually partially covered by flattened crest, pale area appearing as contrasting long broad stripe extending backwards from above eye); upperparts and upperwing green, wingtip blackish-brawn, tail blue-grey; ear-coverts, hindneck and underparts to belly blue-grey, area on flanks (often hidden under wing) and area on lower abdomen to undertail-covers golden olive-yellow; iris dark blue-grey to dark slate-brown; bill and legs black. Sexes alike, female on average smaller that male. Immature is much duller than adult, has hindneck and nape dark olive-green, as back, pale grey area on head confined to small patch above and back from eye; dull olive-tinged bluish-grey below, becoming blackish on upper throat and ohin, feathers of abdomen of abdomen fringed yellowish-olive, becoming dull olive-yellow ventrally. Race brevicauda is like nominate but with shorter tail; olivacea is distinctive, with longer crest, streak above eye to nape white, feathers of nape white basally with black tips, back olive-green, and flanks wholly greyish-blue; alpina is like previous but larger (male wing 112-123 mm, compared with 100-108 mm), with upperparts clearer green, less olive-green, juvenile largely grey below with black throat and pale whitish-yellow lower underparts.