She's sitting on them - has no idea they're duds. She's very funny - if you put your hand inside the cage when she's on the eggs, she'll jump up hissing, wings spread. Then she stops, realizes who the hand belongs to, and happily hops on.
Since she won't relieve herself when she's on the eggs, you have to be careful when you get her out. She can really make a mess. I've taken to putting her in the shower after I get her out. She seems to know why - after she goes she'll come flying back out to her cage.