 Before the fires, there were fewer than 500 Kangaroo Island dunnarts and about 380 Kangaroo Island glossy black cockatoos.Bramble Cay melomys ("Melomys rubicola") became the first known casualty of human-caused climate change in 2015 due to rising sea levels and repeated storm surges; the greater stick-nest rat ("Leporillus conditor") may be next.The loss of an estimated 8,000 koalas ("Phascolarctos cinereus") caused concerns.