UPDATE:
Well, I moved the turkey onto a new nest of turkey eggs last night. She stayed put through the night but defected to the old duck nest today while mama was off and about. I put her back in the new nest right away and she stayed put through the day and tonight she's still there. I've seen her defect half way through a hatch though, I'll be watching.
The ducks have also been scrapping over nests and switching nests. They spent all day chasing each other around the yard sqeeking angrily. Not to mention the chickens keep adding eggs to both nests. So tonight I busted out the rabbit cages and caged-off the front of their nest boxes. I had to move one duck, but I think the move went well. The cages just wouldn't fit side by side. So the ducks can leave the nest into their own respective 18"x30" cage, poop, paddle in a weighted 1 quart dish of water, eat, and... stay put. That's the hope at least. And this should keep the turkey from defecting to the duck nests!
So... the adventure tonight was absolutely disgusting. Do ducks secrete a foul oil like some other animals do? Cause I picked that mama duck up and she squirted the nastiest goo I've ever smelled all over me. I CANT get the smell out of my hands!
She also pooped as I carried her to her new nest and it was a nice solid poo, not this slime she smeared all over me. The smell burned my sinuses and the whole coop reeks of it! I never want to move an angry duck again!