Alfred Newton, 1911 Encyclopædia Britannica, Volume 21… (1911)
“ The peafowls belong to the group Gallinae, from the normal members of which they do not materially differ in structure; and, though by some systematists they are raised to the rank of a family, Pavonidae, most are content to regard them as a sub-family of Phasianidae (Pheasant, q.v.) ”
