Last month I volunteered to teach a class for a youth creative arts club and we made Ukrainian eggs. I haven’t made these for a while so it was a good excuse to try again.
Some of my eggs from 20+ years ago 
2019 egg 
chicken vs duck egg: size comparison
I need to get a few more practice eggs under my belt, but it was fun. I bought 2 dozen duck eggs locally thinking that they’d be fun to work with. I tried some local chicken eggs – but it turns out everyone raises chickens that lay colored eggs and I wanted nice white shells. But when I did a search to see how to clean the duck eggs all I could find were articles telling me you can only wash them with water and if you wash them with soap or scrub with baking soda, the shells won’t take the dye well and they will wind up pastel.
I scrubbed that duck egg with baking soda, wiped it down with vinegar and then rinsed it. It seems to have taken the dye just fine. There are a few irregularities, but nothing I don’t also see in chicken eggs.
