I posted in the "incubation" section earlier about my sudden inheritance today of 15 duck eggs and the dilemma of already having chicken eggs in the incubator. This is the link to the post: https://www.backyardchickens.com/forum/viewtopic.php?id=351328. I guess at this point I'm looking for reassurance that it's possible to successfully incubate duck and chicken eggs together. I'm calculating that they are due to hatch around the same time, give or take a couple of days. All are viable and developing. I know my copy of Storey's Guide to Raising Ducks is here somewhere, but I bet it doesn't address this situation!