Northern boobook
Ninox japonica (Temminck & Schlegel, 1845)
The northern boobook (Ninox japonica) is a species in the family Strigidae, order Strigiformes. Recorded adults weigh 186 g to 225 g. Its IUCN Red List status is Least Concern.

Quick facts about the northern boobook
- Weight
- 186 g – 225 gsrc for Weight
- Length
- Not recorded
- Lifespan
- Not recorded
- Diet
- Invertivoresrc for Diet
- Main food
- Not recorded
- Habitat
- forestsrc for Habitat
- Egg incubation
- 24 dayssrc for Egg incubation
- Young per litter or clutch
- 3.2src for Young per litter or clutch
- Lifestyle
- Perchingsrc for Lifestyle
- Migration
- Migratorysrc for Migration
- Conservation status
- Least Concern (IUCN)src for Conservation status
- Countries on record
- Not recorded
Where does the northern boobook live?
Not recorded
What is the northern boobook?
The northern boobook (Ninox japonica) belongs to the family Strigidae (true owls) and is a raptorial owl endemic to eastern and southern countries of Asia. The species was considered, until recently, a conspecific of Ninox scutulata or brown boobook, a species of similar distribution encompassing 11 subspecies. The species currently includes two subspecies, the migrant Ninox japonica japonica and the non-migrant Ninox japonica totogo. Despite being considered as the most common breeding owl in Japan, little research has been conducted on the species and subspecies and the taxonomic classification of N. j. totogo and N. j. japonica has been a subject of debate. There are no indications of significant decline in northern boobook populations and therefore its conservation status has been classified as least concern by the IUCN Red List.
From the Wikipedia article “Northern boobook” (en.wikipedia.org/w/index.php?title=Northern_boobook&oldid=1380704972), 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 northern boobook endangered?
The northern boobook is listed as Least Concern on the IUCN Red List: it is not currently at risk of extinction.
- 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 Least Concern species. What the categories mean.
How is the northern boobook classified?
- kingdomAnimalia
- phylumChordata
- classAves
- orderStrigiformes
- familyStrigidae
- genusNinox
- SpeciesNinox japonica (Temminck & Schlegel, 1845)
Synonyms Strix hirsuta japonica, Strix japonica
Other names and names in other languages (40)
- Northern BoobokEnglish
- Northern BoobokEnglish
- Northern BoobokEnglish
- nínox borealCatalan
- sovka severníCzech
- Japansk HøgeugleDanish
- Orientalsk høgeugleDanish
- JapankauzGerman
- Nördlicher BoobookkauzGerman
- japania nizostrigoEsperanto
- Nínox japonésSpanish
- japaninhaukkapöllöFinnish
- Ninoxe boréaleFrench
- istočnoazijska ćukušaCroatian
- Pungguk utaraIndonesian
- Gufastore giapponeseItalian
- Gufastore settentrionaleItalian
- アオバズクJapanese
- 솔부엉이Korean
- šiaurinė aštrianagė pelėdaLithuanian
- ziemeļu vanagpūceLatvian
- nordfalkugleNorwegian Bokmål
- Noord-Aziatische ValkuilDutch
- Noord-Aziatische BoeboekuilDutch
- falkugleNorwegian
- sowica północnaPolish
- mocho-japonêsPortuguese
- coruja-gavião-japonesaPortuguese
- Иглоногая соваRussian
- Японская иглоногая соваRussian
- sovka prelietaváSlovak
- Severni bubukSerbian
- nordlig spökugglaSwedish
- นกเค้าเหยี่ยวพันธุ์เหนือThai
- Japon BubuğuTurkish
- сова-голконіг японськаUkrainian
- 北鹰鸮Chinese
- 北方鷹鴞Chinese
- 日本鹰鸮Chinese
- 褐鷹鴞Chinese
Relatives of the northern boobook
Other species in the same genus Ninox.

Brown boobook
Ninox scutulata

Morepork
Ninox novaeseelandiae

Powerful owl
Ninox strenua

Barking owl
Ninox connivens

Andaman boobook
Ninox affinis

Australian boobook
Ninox boobook
CompareNorthern boobook vs Brown boobookNorthern boobook vs MoreporkNorthern boobook vs Powerful owlNorthern boobook vs Barking owl
Common questions
Answered only where our data holds the answer.
How big is the northern boobook?
An adult northern boobook weighs 186 g – 225 g, according to values recorded on Wikidata.
Is the northern boobook endangered?
The northern boobook is listed as Least Concern on the IUCN Red List, meaning it is not currently at risk of extinction.
What kind of animal is the northern boobook?
The northern boobook (Ninox japonica) belongs to the family Strigidae in the order Strigiformes.
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). Northern boobook (Ninox japonica). Retrieved from https://creaturedata.com/animals/northern-boobook
“Northern boobook (Ninox japonica).” CreatureData, 2026, https://creaturedata.com/animals/northern-boobook.
@misc{northern_boobook_2026,
title = {Northern boobook (Ninox japonica)},
author = {{CreatureData}},
year = {2026},
url = {https://creaturedata.com/animals/northern-boobook},
note = {Data as of 2026-11-11}
}