Tasmania has twelve species of bird which are found nowhere else on Earth (i.e. endemic birds). There are also a number of species which are endemic at the subspecies level, such as the threatened wedge-tail eagle, and a number of species which are known as breeding endemics. Breeding endemics breed only in Tasmania and migrate to mainland Australia outside the breeding season. The endangered orange-bellied parrot
and swift parrot
are two such species.