Koala populations in parts of Australia are being controlled to prevent them eating their main food source – manna gum trees – to extinction
Source:
https://www.newscientist.com/article/2263654-koalas-are-being-given-birth-control-to-fight-overpopulation/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home