Sexing individuals by comparison of the colouring does not present the difficulties found in other captive rosellas, being markedly gender dimorphic they are easily assigned. Unusually, head scratching is done by arching out the foot behind and over the wing.
Sex determination in these rosellas relies on the distinct gender dimorphism of their coloration, which makes identification relatively simple.  The unusual head scratching behavior involves arching the foot behind and over the wing.