June 2, 1970 – The Tinain monarch was listed under the U.S. Endangered Species Act, which helped the bird on the long road toward recovery.
September 21, 2004 – The Tinian monarch's population had rebounded, and it was removed from the endangered species list.
May 2005 – The U.S. Fish and Wildlife Service released a post-delisting monitoring plan for the Tinian monarch.