I don't do much in genetics but you can clik on the link for
a bit of explanation. You can also go to www.quakerman.com
to get Toms email address to ask him. He is really great to
help and has been into mutations for over 50 years.
LindaC and Lilo
ps there are several more in the outside/inside aviary that
I turned over to my daughter. some pairs and some retired
like me. :-)