Javan owlet
Glaucidium castanopterum (Horsfield, 1821)
The javan owlet (Glaucidium castanopterum) is a species in the family Strigidae, order Strigiformes. Recorded adults weigh about 198.2 g. Its IUCN Red List status is Least Concern.

Quick facts about the javan owlet
- Weight
- 198.2 gsrc for Weight
- Length
- Not recorded
- Lifespan
- Not recorded
- Diet
- Invertivoresrc for Diet
- Main food
- Not recorded
- Habitat
- forestsrc for Habitat
- Young per litter or clutch
- 2src for Young per litter or clutch
- Lifestyle
- Perchingsrc for Lifestyle
- Migration
- Sedentarysrc for Migration
- Conservation status
- Least Concern (IUCN)src for Conservation status
- Countries on record
- Not recorded
Where does the javan owlet live?
Not recorded
What is the javan owlet?
The Javan owlet (Glaucidium castanopterum) is a species of owl in the family Strigidae.
It is native to the islands of Java and Bali.
Its natural habitat is subtropical or tropical moist lowland forests.
From the Wikipedia article “Javan owlet” (en.wikipedia.org/w/index.php?title=Javan_owlet&oldid=1379852280), 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 javan owlet endangered?
The javan owlet 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.
How is the javan owlet classified?
- kingdomAnimalia
- phylumChordata
- classAves
- orderStrigiformes
- familyStrigidae
- genusGlaucidium
- SpeciesGlaucidium castanopterum (Horsfield, 1821)
Synonyms Glaucidium cuculoïdes castanopterum, Strix castanoptera, Strix spadicea, Taenioglaux castanoptera
Other names and names in other languages (35)
- mussolet de JavaCatalan
- kulíšek jávskýCzech
- kulíšek hnědokřídlýCzech
- cordylluan adeinwinauWelsh
- Indonesisk SpurveugleDanish
- TrillerkauzGerman
- Java-KauzGerman
- JavasperlingskauzGerman
- TrillerzwergkauzGerman
- java strigetoEsperanto
- Mochuelo de JavaSpanish
- jaava värbkakkEstonian
- jaavanvarpuspöllöFinnish
- Chevêchette spadicéeFrench
- bjelotrbi ćukCroatian
- trillázó törpekuvikHungarian
- Beluk-watu jawaIndonesian
- Civetta di GiavaItalian
- Civettina di GiavaItalian
- ジャワスズメフクロウJapanese
- javinė žvirblinė pelėdaLithuanian
- BruinvleugeldwerguilDutch
- javagjøkugleNorwegian
- sóweczka jawajskaPolish
- mochinho-de-javaPortuguese
- mocho-pigmeu-javanêsPortuguese
- Яванский сычикRussian
- Яванский воробьиный сычRussian
- kuvičok trilkavýSlovak
- Javanska mala sovaSerbian
- javasparvugglaSwedish
- Cava Serçe BaykuşuTurkish
- сичик-горобець яванськийUkrainian
- 栗翅鸺鹠Chinese
- 爪哇鵂鶹Chinese
Relatives of the javan owlet
Other species in the same genus Glaucidium.

Eurasian pygmy owl
Glaucidium passerinum

Asian barred owlet
Glaucidium cuculoides

Jungle owlet
Glaucidium radiatum

African barred owlet
Glaucidium capense

Mountain pygmy owl
Glaucidium gnoma

Pearl-spotted owlet
Glaucidium perlatum
CompareJavan owlet vs Eurasian pygmy owlJavan owlet vs Asian barred owletJavan owlet vs Jungle owletJavan owlet vs African barred owlet
Common questions
Answered only where our data holds the answer.
How big is the javan owlet?
An adult javan owlet weighs 198.2 g, according to values recorded on Wikidata.
Is the javan owlet endangered?
The javan owlet 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 javan owlet?
The javan owlet (Glaucidium castanopterum) 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.
- 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). Javan owlet (Glaucidium castanopterum). Retrieved from https://creaturedata.com/animals/javan-owlet
“Javan owlet (Glaucidium castanopterum).” CreatureData, 2026, https://creaturedata.com/animals/javan-owlet.
@misc{javan_owlet_2026,
title = {Javan owlet (Glaucidium castanopterum)},
author = {{CreatureData}},
year = {2026},
url = {https://creaturedata.com/animals/javan-owlet},
note = {Data as of 2026-11-11}
}