The Black Robin in New Zealand is almost the most extreme example of a recovery from near extinction: Just 1 female and 5 males in the early 1980s have now bred

The Black Robin in New Zealand is almost the most extreme example of a recovery from near extinction: Just 1 female and 5 males in the early 1980s have now bred a population of around 300 individuals. There's an interesting story in the wikipedia page [0] of 'edge laying' egg behaviour, and how humans initially corrected the problem but later had to stop to ensure the behaviour wasn't propagated. 0. https://en.wikipedia.org/wiki/Black_robin https://en.wikipedia.org/wiki/Black_robin