Cayuga Duck egg

[LivelyDinosaur]

I have one Cayuga Duck that’s about 6 1/2 months old and she started laying eggs for almost a month from now and has been laying once a week. The first egg was a light Greyish color but when we cracked it, it had a red dot in the yolk so we didn’t eat it. And the eggs kept getting smaller and smaller. Today I opened one of the small egg and the yolk had no color to it and it stunk. We had been out of town for a while so it could’ve been an old egg. But I don’t know

 

[Soon2BChixMom]

The red spot could have been a meat spot. No big deal. But, not sure what is going on with your other eggs.
Hopefully you get some answers.