Oregon Revised Statutes Human Services; Juvenile Code; Corrections § 419B.508

The rights of the parent or parents may be terminated as provided in ORS 419B.500 if the court finds that the parent or parents have abandoned the child or ward or the child or ward was left under circumstances such that the identity of the parent or parents of the child or ward was unknown and could not be ascertained, despite diligent searching, and the parent or parents have not come forward to claim the child or ward within three months following the finding of the child or ward.