 Robinson Crusoe Island is home to an endemic and endangered hummingbird, the Juan Fernández firecrown ("Sephanoides fernandensis").This large hummingbird, about long, is thought to number only about 500 individuals.The other endemic bird species are the Juan Fernández tit-tyrant ("Anairetes fernandezianus") of Robinson Crusoe Island, and the Masafuera rayadito ("Aphrastura masafuerae") of Alejandro Selkirk Island.