I found thid research article while doing some of my own research for a paper i am writing on budgies for school. I though maybe some people may find it interesting.

 

Enjoy

 

http://www.physiology.wisc.edu/~dent/1998_aussies.pdf

 

Quite interesting , Even though we have created a budgerigar that is very different from the wild budgerigar , Nature still holds the key with with many aspects of this little parrot.

that is an interesting find.