Mauritius Owl Mascarenotus sauzieri is only known from
subfossil bones from Mauritius, and was described and sketched
by a number of early travelers. Desjardins reported that
it was fairly common in the island's woods even as late
as the 1830s, but his 1837 reports were the last, and Clark
specifically wrote that it was extinct in 1859. Taxonomy
Rothschild's Strix newtoni is a synonym, as is Otus commersoni.