Bokikokiko
Acrocephalus aequinoctialis (Latham, 1790)
The bokikokiko (Acrocephalus aequinoctialis) is a species in the family Acrocephalidae, order Passeriformes. Recorded adults weigh 19 g to 25 g. Its IUCN Red List status is Endangered.
Quick facts about the bokikokiko
- Weight
- 19 g – 25 gsrc for Weight
- Length
- Not recorded
- Lifespan
- Not recorded
- Diet
- Invertivoresrc for Diet
- Main food
- Not recorded
- Habitat
- shrublandsrc for Habitat
- Young per litter or clutch
- Not recorded
- Lifestyle
- Generalistsrc for Lifestyle
- Migration
- Sedentarysrc for Migration
- Conservation status
- Endangered (IUCN)src for Conservation status
- Countries on record
- Not recorded
Where does the bokikokiko live?
Not recorded
What is the bokikokiko?
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 population size of the bokikokiko is estimated to be around 2500, with a decreasing population trend. 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. This species, along with the Henderson petrel, is currently listed as endangered on the IUCN Red List.
From the Wikipedia article “Bokikokiko” (en.wikipedia.org/w/index.php?title=Bokikokiko&oldid=1379919648), by Wikipedia contributors, licensed under CC BY-SA 4.0 (creativecommons.org/licenses/by-sa/4.0). This block is kept separate from our own text.
Is the bokikokiko endangered?
The bokikokiko is listed as Endangered on the IUCN Red List: it faces a very high risk of extinction in the wild.
- LCLeast Concern
- NTNear Threatened
- VUVulnerable
- ENEndangered
- CRCritically Endangered
- EWExtinct in the Wild
- EXExtinct
Category via Wikidata (CC0). Find the full assessment on the IUCN Red List. See all Endangered species. What the categories mean.
How is the bokikokiko classified?
- kingdomAnimalia
- phylumChordata
- classAves
- orderPasseriformes
- familyAcrocephalidae
- genusAcrocephalus
- SpeciesAcrocephalus aequinoctialis (Latham, 1790)
Synonyms Sylvia aequinoctialis
Other names and names in other languages (40)
- Christmas reed-warblerEnglish
- Christmas reed-warblerEnglish
- Kiritimati reed warblerEnglish
- Kiritimati reed-warblerEnglish
- boscarla de les illes de la LíniaCatalan
- rákosník kiribatskýCzech
- telor cyrs PolynesiaWelsh
- Polynesisk SangerDanish
- FanningrohrsängerGerman
- Fanning-RohrsängerGerman
- KiribatirohrsängerGerman
- kiritimatia kanbirdoEsperanto
- Carricero de ChristmasSpanish
- Carricero de KiritimatiSpanish
- Christmas roolindEstonian
- kiritimati roolindEstonian
- سسک جزیره کریسمسPersian
- linenkerttunenFinnish
- Rousserolle de la LigneFrench
- sivi trstenjakCroatian
- fanning-szigeti nádiposzátaHungarian
- Cannaiola di ChristmasItalian
- Cannaiola di Kiritimati / BokikokikoItalian
- クリスマスヨシキリJapanese
- polinezinė nendrinukėLithuanian
- полинезиски трскарMacedonian
- ChristmaseilandkarekietDutch
- Christmas-IslandkarekietDutch
- bokikokikosangerNorwegian
- trzciniak popielatyPolish
- felosa-da-kiritimatiPortuguese
- felosa-de-kiritimatiPortuguese
- Полинезийская камышевкаRussian
- Полинезийская камышовкаRussian
- trsteniarik sivýSlovak
- kiritimatisångareSwedish
- Kiritimati KamışçınıTurkish
- очеретянка попелястаUkrainian
- 聖誕島葦鶯Chinese
- 基里巴斯苇莺Chinese
Relatives of the bokikokiko
Other species in the same genus Acrocephalus.
Great reed warbler
Acrocephalus arundinaceus
Common reed warbler
Acrocephalus scirpaceus
Sedge warbler
Acrocephalus schoenobaenus
Aquatic warbler
Acrocephalus paludicola
Marsh warbler
Acrocephalus palustris
Blyth's reed warbler
Acrocephalus dumetorum
CompareBokikokiko vs Great reed warblerBokikokiko vs Common reed warblerBokikokiko vs Sedge warblerBokikokiko vs Aquatic warbler
Common questions
Answered only where our data holds the answer.
How big is the bokikokiko?
An adult bokikokiko weighs 19 g – 25 g, according to values recorded on Wikidata.
Is the bokikokiko endangered?
The bokikokiko is listed as Endangered on the IUCN Red List, meaning it faces a very high risk of extinction in the wild.
What kind of animal is the bokikokiko?
The bokikokiko (Acrocephalus aequinoctialis) belongs to the family Acrocephalidae in the order Passeriformes.
Sources and how to cite this page
Data as of 2026-11-11. How this page is put together.
- An amniote life-history database to perform comparative analyses with birds, mammals, and reptiles · CC0 1.0 · E096-269
Myhrvold, N.P., Baldridge, E., Chan, B., Sivam, D., Freeman, D.L. & Ernest, S.K.M. (2015) An amniote life-history database to perform comparative analyses with birds, mammals, and reptiles. Ecology 96: 3109. https://doi.org/10.1890/15-0846R.1. Data: https://doi.org/10.6084/m9.figshare.3563457.v1 - AVONET: morphological, ecological and geographical data for all birds · CC BY 4.0 · v7
Tobias, J.A. et al. (2022) AVONET: morphological, ecological and geographical data for all birds. Ecology Letters 25: 581–597. https://doi.org/10.1111/ele.13898. Data: https://doi.org/10.6084/m9.figshare.16586228.v7 - Catalogue of Life eXtended Release · CC BY 4.0 · 2026-10-16 XR
Catalogue of Life (2026). Catalogue of Life eXtended Release, version 2026-10-16 XR. Catalogue of Life Foundation, Amsterdam, Netherlands. https://doi.org/10.48580/dgzlf - Wikimedia Commons · per file (CC0 / public domain / CC BY green, CC BY-SA amber, anything else not displayed) · 2026-11-11
Wikimedia Commons contributors. Wikimedia Commons. https://commons.wikimedia.org (each file credited to its author under its own licence). - Wikidata · CC0 1.0 · 2026-11-11
Wikidata contributors. Wikidata. https://www.wikidata.org (data retrieved via the Wikidata Query Service). - Wikipedia (English) · CC BY-SA 4.0 · 2026-11-11
Wikipedia contributors. Wikipedia, The Free Encyclopedia. https://en.wikipedia.org (text under CC BY-SA 4.0; each block names its article and revision).
Embed a card for this animal on your own site
Copy this code. The card shows the photo with its credit, key facts and a link back to this page.
CreatureData. (2026). Bokikokiko (Acrocephalus aequinoctialis). Retrieved from https://creaturedata.com/animals/bokikokiko
“Bokikokiko (Acrocephalus aequinoctialis).” CreatureData, 2026, https://creaturedata.com/animals/bokikokiko.
@misc{bokikokiko_2026,
title = {Bokikokiko (Acrocephalus aequinoctialis)},
author = {{CreatureData}},
year = {2026},
url = {https://creaturedata.com/animals/bokikokiko},
note = {Data as of 2026-11-11}
}