The population growth is so great as to exceed the carrying capacity of the island, which eventually causes a dramatic population crash, and then the cycle repeats.
However, sudden population crash occurred in late 2001, and in just five years in most areas, the woylie population dropped to only 10-30% of its pre-2001 numbers.
A scientific study attributed the population crash to the limited food supply in interaction with climatic factors (the winter of 196364 was exceptionally severe in the region).
Possible alterations include adding, disrupting, or modifying genes, including some that reduce reproductive capacity and may cause a population crash.