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.”