The US was once home to two subspecies of the extinct Carolina parakeet: one vanished in the 1910s but a study hints that the other survived into the 1940s
Source:
https://www.newscientist.com/article/2223023-lost-us-parrot-species-went-extinct-not-once-but-twice/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home