I have a Rounen duck that i got at the beginning of the year. This is my first time having a duck of any kind. Anyways, she started laying eggs yesterday and then another today but they look odd. They seem small for a duck egg, and they are noticeably different sizes and color. Is this normal and is it because she just started laying for the first time? Or is this something to be concerned about? Also, how do i tell if these eggs are any good or if I should throw them out? I have attached a picture of her 2 eggs.