is endemic to Kiritimati (Christmas Island) and Teraina (Washington) islands in the Northern Line Islands, Kiribati
. It was described as 'common' on Kiritimati in 19661
, but just 400 individuals were estimated there in 1972 and it was 'scarce in the vicinity of settlement' by 19802
. It remained common on Teraina in 19803
. It formerly occurred on Tabueran (Fanning), but was apparently extirpated in 1972,
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