So I really don't know much about budgie mutations, but I've been looking at Lindsey's helpful guide and thought I'd try to figure out my two budgies' coloring. Since I just got some pictures uploaded, I wanted to see if I was right about the mutations.
I'm pretty sure Tweety is a sky blue opaline. I'm guessing Lemon is a double factor dominant pied, but possibly with something else that makes his head and neck markings so light. Can anyone let me know if I'm right or way off base?