The Western Ringtail Possum (Psuedocheirus occidentalis) (WRP) is endemic to the southwest of Western Australia. Over recent history numbers have declined, and continue to do so due to habitat loss, degradation, fragmentation, predation by introduced predators (notably foxes and cats), increased resource competition (e.g. hollow competition), and have also been identiﬁed as a species likely to be impacted by climate change. Another increasing threat is unregulated relocation of rehabilitated animals (e.g. through introduction of disease). Due to historic decline, and continued threats, they are listed as Critically endangered under the Environmental Protection and Biodiversity Conservation Act 1999 (Federal), and have recently been upgraded to Endangered under the Wildlife Conservation Act 1950 (State).
A 2008 survey of WRP in the Greater Albany Area (Gilﬁllan, 2008) identiﬁed a number of gaps in their distribution, in areas where suitable habitat occurs. The following project aim to solve this;