I haven't been able to find much on duck eggs. Chicken eggs sure. I assume much of it is the same but I had read somewhere that duck eggs because the shell is thicker can keep longer? I plan on leaving the bloom alone and just brushing off the muck for storage. For the fridge- how long do they usually keep? On the counter- how long do they usually keep? Any other tidbits anyone wants to share welcome, beyond welcome. I'd love to hear what you do. I have been buying my eggs farm fresh from a local farmer and he also does not wash them so I am totally comfortable with that. And I often will buy about 4-6 dozen at a time and work on them all month long.