Probably on an acacia. But not a local one to here. Could also have been a callistemon but no flowers or old seed pods to confirm it and hence mostly likely the wattle.
This area is interesting environmentally speaking. In a lot of ways closer to south coast environment than than tablelands. Used to be in the south coast weather district and we certainly don't have ACT weather patterns at all. This also is an area where remnant and odd species are found. For those of us who follow wildlife, nothing really surprises us.
Well at the edge of the final mountains before the coast some of which is escarpment. We are also at a point where the easterly winds drift (and sometimes a bit faster than drifting) through a gap making it generally cooler and with a higher rainfall.