Mentioned a trip a few weeks ago to the You Yangs.
One of the highlights of the morning was an encounter with a family group of Varied Sittella.

These charming little birds are not always so easy to find, and because of their hyper-active approach to feeding, are always on the move.  It might be I guess that they have to search through all the bits of loose bark on a branch looking for a tid-bit, and with so many birds all at work at the same time, its really the quickest down the branches.  Sittellas have an unique approach to feeding, starting at the top of the tree and then working their way down.  Treecreepers on the other hand, usually start lower down and work upwards.

What was interesting is that this family had several young, recently fledged with the party.  The young ones preferred to sit together and preen, while the adults did all the work.
They moved so quickly that we lost them for a short time, and while we went right, they apparently had gone left.
Big Rock is just what it says, a very big rock.  There is a track around the base, and its about 20 minute stroll.   The birds were working primarily in Black wattle that grows up along the base of rock. When the rains come, good water flows from the rock, but at other times, the area is particularly dry  so much of the wattle never grows to maturity.  Which suits the insects that the Sittellas feed. So it works all round.

Enjoy.