New Caledonian Boobook (Ninox sp.)
This taxon is known only from subfossil remains that were found in the deposits of at least two caves on the western coast of the island of Grande Terre, New Caledonia.
This form is believed to be extinct, however, there’s a slight chance that it may still survive, since the nocturnal avifauna of the New Caledonian islands still is very much underexplored.
*********************
edited: 05.11.2021