Lord Howe Boobook ( Ninox novaeseelandiae albaria)
Also known as Lord Howe Morepork was endemic to Lord Howe. The Lord Howe Island Board introduced Masked Owls and Barn Owls in the 1920's with the hope of them getting rid of the black rats. The larger Owls would have forced the smaller Boobook out of his area. Extinct some time around 1950.