“Routine maintenance”.
Our heroine is more spectacular than the “average” bird, but in this photo she is engaging in a necessary activity which all birds undertake.
It is called “preening”.
Preening is very much more “involved” than most people imagine.
Discover more, here.
Photo of female Forest red-tailed black cockatoo is copyright Doug Spencer, taken in Shenton Bushland at 4.53 pm on 14 May 2023.