I have a Rouen duck who has been sitting on some eggs for about 3 weeks now. It took us by surprise that she even is doing this, but we thought we'd let her go and see what happens. (We've only incubated eggs, never had a chicken or duck hatch any). Tonight we found her nest "scattered." I didn't see the nest, but my husband said he didn't see any eggs in the nest at all. I went down there as soon as I got home and she was sitting. I candled the eggs that were in close proximity to her nest and 6 of the 12-15 looked like there was something going on. We put them in the incubator, but now I don't know what to do. Should we take her off her nest and put these eggs back? Should we wait until she gets off (she goes off 1-2 times a day to eat and play) and then put them in there? Should we wait until they start to hatch and then put them in there? Should we wait until they are completely hatched and hope she takes care of the babies? I have the ability to take care of them myself, but I don't really want to, so if I could get them back with their mother, that would be ideal. Any suggestions would be great. Also, if anyone knows why she did this in the first place. Does she know something we don't know about the eggs she kicked out? She is sitting on at least 2 that I can see, but she had about 15 before all this.

Thanks!!