The photos show a female Galah from a couple that were on a tree. I heard them before I saw them, as I could hear the cracking sound of a strong beak on wood. Although I was attracted by the sound, I first saw the quiet male who was sitting on a branch preening himself before I noticed the female below him chewing at the exposed dead wood inside the tree. The bird would chew at it for a bit, before looking to its right.