Nice birds!

The wet bird in your first pic has distinct banding in his tail feathers, that should make a sweet tail mount...

I'm hedging double beard because you say there's skin. I blew it up and can't see the skin, but that's probably because of the angle of the pic. I've found the best way to determine the difference between double and split beard is to stand the beard on end, with the base on a flat surface. Pull the two beards apart - if there is skin between the two and two clearly distinct pedicles (bases), then it's a true double.