Alfred Newton, 1911 Encyclopædia Britannica, Volume 27… (1911)
“ To take first the Plantain-eaters proper, or the genus Musophaga, of which only two species are known. One, about the size of a crow, is comparatively common in museums, and has the horny base of its yellow bill prolonged backwards over the forehead in a kind of shield. The top of the head and the primaries, except their outer edge and tip, are deep crimson; a white streak extends behind the eye ”
