Is the bilby's population increasing or decreasing?

Male bilbies can be up to 55cm long in its body, with a tail up to 29cm long, whilst the females tend to be about half that size.
Males weigh from 1 to 2.5kg, while females weigh much less, from 800g to 1.1kg.

In imperial terms, this works out to a head-and-body length of about 19.5 inches, and a tail length of about 15.5 inches. Weight averages three pounds.