Hello, I am hoping to get advice for telling duck eggs apart from chicken eggs. I have 2 female Pekins and 1 female Khaki Campbell along with 3 chicken hens housed together. My babies were hatched on May 16th, 2016. For the past few weeks I routinely get 3 eggs in the morning. Does any one have any idea which one came from which critter? My best guess is that the large egg is from one of the Pekins, some mornings I get 2 large ones solidifying my conclusion. For the two smaller ones I can't tell if they are chicken eggs or if one is a duck egg and the other a chicken. Any advice for telling them apart? Naturally my chickens mimic the ducks and lay in their nest. I am trying different nest boxes but so far the chickens aren't using them.