Alright. Always willing to accomodate.
For some of us, it is important to know whether or not a child is born, or a chicken is hatched. It means something to us. Birthdays mean something to us, and to most governments, for example. Try collecting SS nine months before you can legally retire.
So, we will just use the term "unhatched" for those chickens we are not interested in buying, and "unborn" for those humans who do not yet have birthdays. And we will call those for which these are not useful definitions, half-baked.
Hank