Seeing as the only question you posted was the subject of this thread, I have to assume you feel that a child was abandoned by their parent(s).

There is a sticky at the top of the Family Law forum which explains abandonment - it can be read here:
https://www.askmehelpdesk.com/family-law/child-abandonment-read-first-364259.html

Would you care to give us some more information regarding your situation so that we can better understand and advise you?