I've had chickens to grow up to be different breeds than I thought I'd purchased. I understand it can be a little disappointing, but really can't complain when they are friendly and healthy and all get along without drama. It's just an excuse to buy another duck right?
maybe this will help
https://www.backyardchickens.com/threads/duck-breed-focus-project.1024526/
or maybe @sumi or @chickens really or @CayugaJana or someone knows
I don't think this is a Muscovy or a male.
Unless you have another male, your eggs aren't likely fertile. If you collect the eggs daily, you won't accidentally find anything developing inside, even if they are fertile.
Enjoy your eggs! I wish my girls would start laying again soon!