The Chatham Islands are found to the southeast of mainland New Zealand and are home to the black robin, which became extinct on the main island of the Chatham group as early as 1871! Numbers continued to fall, and by 1979 there were only five left, and only one female who could lay fertile eggs. This female was named Old Blue, and she managed to save the day and her species. Now there are 200 or more black robins, all of them her descendants, making Old Blue a goddess among robins.
USFWS Mountain-Prairie / Flickr / CC BY 2.0