Watch Bombuj. Western Australia's iconic black cockatoos are in crisis. Their numbers have fallen dramatically over the past few decades and all three species in the south west of WA could become extinct in just 20 years unless something is done to protect their habitats. With the loss of the banksia woodlands on the Swan Coastal Plain to housing, Carnaby's Black Cockatoos have come to depend on the once vast exotic pine plantations on Perth's northern fringe.