I have blond Eurasian collard doves (white doves) that are laying- but have no clue how to ship eggs even tiny eggs...
I also cannot guarantee anything besides that its a dove egg- I have two laying fertile couples, one not sure yet- they are all new layers so its rather hit or miss at the moment.
Also I could send one from each nest next lay (these are already several days incubated)...
Where are you located?
You might want to find someone that's does this before...
What are you going to incubate them in and whats you survival rate replacing crop milk?