Bevölkerungsrückgang
Population decline was unsustainable and intervention was required. In 1993 birdlime trees in the nesting colony were removed and pied currawongs were culled. Rabbits were eradicated from the island in 1997. Fledging success increased from fewer than 50 to more than 450 per annum and the number of breeding adults increased to over 1,000 pairs.