A single decomposed dropping like this is not reliably identifiable.
Fresh macropod droppings are not as easy to identify to species as some books imply. Groups of droppings are more reliable than single droppings, but there is overlap between the droppings of the four large extant ACT species (EGK, CW, RNW, BW). Droppings of Brush Tailed Rock Wallabies and Eastern Bettongs are different from all the other local species but both these species are present only in captivity at Tidbinbilla.