Hervey’s Range was incredibly dry a couple of months ago and the wallabies were desperate enough for green food that they went into gardens for anything that had been watered. The Range has had half a metre of rain since then and the need is not so great but it seems that the habit has persisted. They are still not comfortable with people around, so when I got too close to these two they became alarmed and hopped away.
Rootourism, the best online source I found for checking the facts on the different species of wallabies and kangaroos, confirmed my thought that they were Agile Wallabies, Macropus agilis, with this description:
They have two distinctive head features: a dark stripe down the midline between the ears to the eyes and a light colour cheek-stripe. They also have a distinctive light stripe on the thighs. The margins of the ears and the tail tip are black.
Their range map was another confirmation.