Just last night I purchased a full bred Great Pyrenees puppy because I know people who own some to watch their chickens and goats. Her name is Scout(or Lucy) and I'm looking forward to socializing her and making sure her and the bonkers don't hate each other.
Beautiful and *very* independent dogs! You'll need a competent groomer to manage their long, thin, beautiful fur!!
I had a male Great Pyrenees "Buddy" who was wonderful with my birds. Never paid them any attention, though proper precautions were followed. He was quite aloof with humans and was a barker. Good luck, looking forward to pics as able!