I think one of my cayuga ducks layer two eggs but they are white. This is thier first season as mature ducks. The eggs are outside instead of in the coop so I'm wondering if they belong to my ducks at all. Would a duck mess with another birds nest? I saw her go into the nest and move some twigs around. I want to put them in the coop if they are hers. Should I try them in the coop or wait to see if the ducks did lay them?