 The species has been introduced to Chichijima from Hahajima, so it was assumed that all records related to that introduction, but its natural presence on the island, and subsequent extinction, was subsequently established from early accounts, and a bird from that island was the type specimen for the species.All records of the species in the Chichijima Group are from the main Chichijima Island.On Hahajima, the only island that its habitat preferences have been studied on, the species occupies almost every habitat type.