Dave Holderread was not one of the founding breeders nor did he
play a major role to my knowledge in the development of Muscovies in the USA
nor do I believe he had that strong of an interest in them.
He doesn't even breed them anymore and dropped them a
few years back.
Dr. Hollander played a major role in developing Muscovies in the USA.
I have some hard copy of his articles given to me by Brian Paul Witt.
I will try to find them, scan them and send you copies
if you will me your address Fr. John.
Not much info out there on Muscovies.
As for genetics...its like Algebra for me.
Here's some basic info that I've gathered which is about as far as I can go
when it comes to genetics:
http://www.freewebs.com/thewaterfowlplace/muscovygenetics.htm
http://www.freewebs.com/thewaterfowlplace/muscovycolorbreeding.htm
My friend Rusty Hart is very knowledgeable about Muscovy genetics but
he's
veryhard to get a hold of and doesn't email much.
If you have anything you're stumped on...email me and
I will try to get a hold of Rusty for you.