In Australia, the primary sources of threat to "F. grallaria" are habitat loss and invasive species, the latter introduced by fishing and shipping vessels and land-based activity, in particular the domestic cat and the black rat. The impact of invasive species is considered a ‘concern’ for breeding and a ‘potential concern’ for foraging by the commonwealth and include reduced reproductive success, direct mortality, and ecosystem degradation. The extinction of "F. grallaria" on Lord Howe island is attributed to the introduction of the black rat in 1918.