Found the little tiny blue/green egg in my duck's stall this am. As you can see, it is tiny. The outside is kind of pebbly. I have never had one of my ducks lay anything but off white eggs. IS this a duck egg? If not, what is it? And no one can answer this, but where the heck did it come from. I have three hens. One must be laying somewhere else, because I only get two eggs every morning. Unless one is not laying any more. No idea. But I really would like to know what this little egg is. I have never seen anything like it come out of any of my ducks.