by William Swainson, Zoological Illustrations Series II… (1829)
“ Ils ne sont ni farouches, ni remuans, et ils se tiennent long temps à la même place. Ils ne sortent point des grands bois, et ils se perchent toujours au plus haut des arbres les plus èlevés, où ils ne cherchent pas à se cacher. ”
by William Swainson, Zoological Illustrations Series II… (1829)
“ Head very large, depressed. Mouth very wide. Bill thick, depressed, convex above. Feet weak, tarsi rather short, toes united at their base, the outer manifestly longer than the inner; claws broad, compressed; anterior scales transverse; lateral scales small, numerous. The male generally with a spurious quill between the first and second. Genera. Psaris. Cuv. Rictus smooth, wings lengthened, the first quill much longer than the fourth, tail short, even. ”
