Second Emu War

The Second Emu War was a conflict fought between Australia and a newly-created sentient race of intelligent emus. The war began shortly after World War 3 when nuclear fallout from nukes detonated on Australian soil caused mutations on the local wildlife, emus included. Upon the realization that they were being oppressed by the Australians, and that they lost the last Emu War, the emus, now as intelligent as regular human beings, somehow managed to send a declaration of war to the Australians and began invading, mainly sending hordes of emus in Australian settlements and overwhelming them.The war has been ongoing for over a decade with neither side managing to overwhelm the other, mainly due to the vast distances involved in the conflict.

Emus
The emus (Dromaius novaehollandiae) is a bird endemic to the Australian continent. Emus can travel large distances, travel at up to 50 kilometers per hour, and can go weeks without eating or drinking. Thus, these creatures are, to put it simply, the perfect killing machines, and easily justify why Australia has lost one (soon to be two) wars against them. Until the end of World War 3, emus were unintelligent, only having the average intelligence for an animal. But since the nuclear strikes on Australia, the nuclear fallout has significantly altered their brain structure, and has managed to evolve into having a human level of intelligence. These new intelligent emus have been reported to be able to coordinate and execute successful military maneuvers, are capable of a limited form of speech, mainly through variations in pitch during screeching, and have sharper beaks than their unintelligent counterparts. Based on latest estimates, intelligent emus have taken up at least 30% of the emu population in Australia, and is expected to grow more numerous in the coming years.