Yesterday we found two eggs in our yard for the first time. We have two female ducks, one is 20 weeks old and the other is 17.5 weeks old. I'm trying to figure out if they both started laying on the same day, or if they are both from the same duck. I assumed it was the older duck, but the egg colors are slightly different. One is greyish and the other has a distinctly blueish hue. The eggs were smaller than chicken eggs. Our ducks are mixed breed, although the younger has similar coloring to a black Swedish. I wasn't sure if a duck would lay two eggs on her first day laying and if they could be different colors. But it seems strange that they would both start laying on the same day since they are different ages. What do you think? Here are the eggs: And some photos of my ducks are here, the girls are the brown one and the black one with the white bib.