When the parental rights of a birth parent are terminated pursuant to Chapter 5 (commencing with Section 7660) of Part 3 of Division 12 or Part 4 (commencing with Section 7800) of Division 12, the department or delegated county adoption agency shall send a written notice to the birth parent, if the birth parent's address is known, that contains the following statement:
"You are encouraged to keep the department or this agency informed of your current address in order to permit a response to any inquiry concerning medical or social history made by or on behalf of the child who was the subject of the court action terminating parental rights."
Ca. Fam. Code § 8819