Depicted: Teraina (top), Tabuaeran (middle), and Kiritimati (bottom), Northern Line Islands, Kiribati, Oceania The bokikokiko, Kiritimati reed warbler or Christmas Island warbler (Acrocephalus aequinoctialis) is a species of warbler in the family Acrocephalidae.

It is found only on Kiritimati and Washington Island (Kiribati).

The species is under threat from introduced species such as the pig and rat but especially the feral cat and climate change in relation to rising sea levels.

[2] The species may be divided into the following subspecies: This bird has a lot of medicinal and symbolic significance.

Its feathers are considered to have testosterone enhancing properties since ancient times, which is why these birds were hunted so widely.