Several ant nests along Clancy's track had this white powder sprinkled on them. Previous sighting about 2 weeks ago of the same thing. Do other reserves see this happening to ant nests? Is someone trying to feed the ants or poison them?
Unfortunately there are a lot of weird, antisocial and illegal activities in this area - I hope the powder is harmless such as the cooked rice and lentils that I found on meat ant nests elsewhere; see for instance https://canberra.naturemapr.org/sightings/4559594.