leucistic Crimson Rosella

[Ryu Callaway <>]

And a similar bird reported to Canberra Nature Map in September from Banks

http://canberra.naturemapr.org/Community/Sighting/3380520

The following site (http://users.skynet.be/platycercus/CrimsonMut.html) lists the 'blue' Crimson Rosella which looks like these birds as a recessive mutation. 

My simplistic interpretation of that I think is:

• A bird may carry the mutated gene but not show it
• For a Crimson to be 'blue' both its parents must carry the mutant gene
• The 'blue' Rosella must receive the mutant gene from both parents
• 2 normal parents both carrying the recessive gene: 25% chance of 'blue' offspring
• 1 blue rosella and the other normal parent carrying the recessive gene: 50% chance of 'blue' offspring
• 2 blue rosellas: 100% chance of 'blue' offspring

Ryu