Lord Howe boobook than both the New Zealand and Norfolk Island subspecies. The Lord Howe boobook was restricted to Lord Howe Island where it inhabited the native forests as well as occurring around the settlements. Exactly when the Lord Howe boobook became extinct is uncertain. Boobook calls were apparently heard on the island until the 1950s, but during the 1920s boobooks from near Sydney in eastern Australia had been introduced, along with barn owls and masked owls, in an unsuccessful effort to control the black rats that had overrun the island. The rats had been accidentally introduced in June 1918 with the grounding
1977 Australasian Individual Speedway Championship England. Ivan Mauger would go on to win his record equalling 5th World Championship later in the year at the Ullevi stadium in Göteborg, Sweden. 1977 Australasian Individual Speedway Championship The 1977 Australasian Individual Speedway Championship was the second annual Australasian Final for Motorcycle speedway riders from Australia and New Zealand as part of the qualification for the 1977 Speedway World Championship. The Final took place at the Sydney Showground. Four time World Champion Ivan Mauger was the winner after defeating Phil Crump and defending Australasian Champion John Boulger in a runoff after all three riders finished on 14 points.