The Varied Sittella is also known as the Australian Nuthatch, Black-capped or Orange-winged Sittella or Barkpecker. They are found on mainland Australia. They measure between 10 - 14 cm in length and weigh about 13 grams.
Varied Sittella measures 2.5 x 3.5 inches and is painted on 500gsm Colourfix Suede paper.
Many thanks to Patrick Kavanagh for the reference photo.