Alfred Newton, 1911 Encyclopædia Britannica, Volume 19… (1911)
“ Whether the birds of the two islands were specifically distinct or not we shall perhaps never know, since they are all extinct, and no specimen undoubtedly from Norfolk Island seems to have been preserved. The Phillip-Island Nestor may be distinguished from both of the New-Zealand species by its somewhat smaller size, orange throat, straw-coloured breast, and the generally lighter shade of its tints. ”
