Blue / Mutation forms
A variant of Crimson Rosella (Platycercus elegans)

Representative Crimson Rosellaphoto — a dedicated image of this exact morph isn't available yet.
Captive color mutations (blue, and various dilute/pied lines) that remove or alter red pigment, producing blue-and-white birds. Scarce and pricey in aviculture.
Keeper tips for this variant
Mutation lines are often inbred from a tiny founder base—outcross to wild-type crimsons periodically to avoid the reduced fertility and vigor seen in over-line-bred stock.