To quote Frank Angones about the exact same question: No.

Edit: Hey all. Just to be clear, I always imagined that it was a surrogacy situation. But I won’t stop anyone from head cannoning otherwise. We just have so many different adoption/found family scenarios already that I want to include a different kind of parentage in the mix

Like remember, apparently, the tripplets dont have a dad and they dont question it. because they dont need another duck to have kids so like one of them could have given birth to them.

I doubt that Violet is adopted, her mother may have died or other issues, and her birth father got remarried. AndPeggyS, "because they don't need another duck to have kids so like one of them could have given birth to them." One, Scrooge has a mother and father. He resembles the qualities of both of them. The triplets must just not know about their father and don't want to mention it either. We could be finding more information about him later.

@DazxleX thats a good theory, but like why would the triplets not want to know about their dad cause like its gonna pop up. and also, like he doesn't exist he's not a character! any family tree doesn't have him sooooo.

@AndPeggyS. Hi, yes that is true but it could be for a not good reason, he died, got lost, etc. In the original DuckTales the triplets were sent to Uncle Donald because they blew up a firecracker under Mr. Duck (Della's Husband's) chair. So Della wrote in the letter that they blew up a firecracker under their Father's chair.

Yes

Probably all we know is Lena is adopted