Being a Pekin, it's hard to tell if she will or won't go broody full time. Both my girls did that part time thing for about 2 weeks before really committing. She might, she might not.
My update... I've been hands off, because the duck Duchess really doesn't like me fooling with her nest. The chicken, she let's me do what I like with minimal growling, she's a sweet bird and trusts me.
So the duck, had 2 babies hatch early, way early, before I had the wall built to keep the boys out. I found the babies on the floor in the middle of the coop, dead. I don't know who did it. I built the wall right then. I gave her the 2 eggs the broody chicken had. Those were all due the same day, the first ones to hatch... she must have been setting longer than I thought.
She now has 2 more babies. I found one kicking around learning to walk outside of the nest, cold. Stuck it back under her. One more egg pipped yesterday, so she might end up with 3. She has no idea what she's doing. She should know to keep the babies with her. So it's possible the other 2 were left out when they crawled out, and they got too cold. It might not have been the boys after all.
The boys hover at the wire wall, very concerned. Watching intently. Getting mad at me. Her going broody has made Earl very watchful of me. He escorts me around the yard now, and chases me when I turn my back on him. He's been getting held a lot. LOL
The chicken... she's a perfect mother. I felt bad for stealing her duck eggs, so I bought her some day old chicks. She now has a clutch of 10 in a broody hut, 4 EEs, 3 Naked Necks, 2 black looking pullets, and one lavender bantam Americauna (I hope!). She's really pleased with herself! I gave them to her in the middle of the afternoon so I could watch her before nightfall, to see what the next morning would be like because I had to be at work at 5:30. She took them!
It took her 4 days to come off the nest. I had to put the food and water nearby to make sure the chicks could pop out and eat.
The chicken is doing a much better job than the duck. The duck is acting like she knows what to do with eggs... but not babies. The chicken was gently rolling chicks under her, making a fuss about it, and keeping them close.
Also bought 3 turkey poults... they're in a brooder. I hear they're sensitive and die easily, so I'm raising them myself. Plus the chicken has her hands full, those babies run her ragged.
If the duck figures this out, she can have more eggs next year. I didn't let them have very many because it was the first time for both of them. The chicken, she can have as many eggs as she can set on! She's a natural.