Try artificial heads. I will never go back to using real heads. With the artificial heads you do not have to worry about shrinkage and all of your painting will be completed before mounting so no need to worry about overspray on the feathers. Try just one, they are well worth the money (which isn't much anyway). You won't regret it.
I prefer Cory Coruthers', but any of them are better than trying to get the real thing to look decent. Good luck.
