Photo: Francesco Veronesi from Italy / CC BY-SA 2.0 (Wikimedia Commons)
Javan Owlet
Glaucidium castanopterum
Javan Owlet (Glaucidium castanopterum) — Owls of South & Southeast Asia.
Found across 2 guides in our atlas — open any for the full checklist, photos and what's around right now.
The Javan Owlet (Glaucidium castanopterum) is a member of the Strigidae family found in South & Southeast Asia. Adults weigh 198 g. The IUCN Red List lists it as Least Concern.
Conservation status
IUCN Red List (opens in a new tab)Widespread and abundant — not currently at risk.
Where it fits
- Class Aves
- Order Strigiformes
- Family Strigidae Owls
- Genus Glaucidium
- Species castanopterum
Quick facts
- Weight
- 198 g
- Diet
- Invertebrate-eaters
- Family
- Strigidae
- Order
- Strigiformes
- Habitat
- Woodland
How to identify
Similar birds
Least Concern
Endangered
Least Concern
Least Concern
Biology & behaviour
Diet
The Javan Owlet is a invertivore — it feeds mainly on invertebrates such as insects and other small prey.
Behaviour
A bird of dense forest, it spends much of its time perched in trees and shrubs.
Migration
The Javan Owlet is largely sedentary, staying within its range year-round rather than making regular long-distance migrations.
The Javan Owlet (Glaucidium castanopterum) is a member of the Strigidae family, within the order Strigiformes. Its range spans South & Southeast Asia. Its distribution covers OR Java and Bali.
It is a large bird. Adults weighs around 198 g, with a wing length of about 14 cm and a tail of around 7 cm.
The IUCN Red List currently assesses it as Least Concern. That category covers species that remain widespread and reasonably abundant in the wild.
Its mapped global range covers an estimated 50,000 km².
Songs & calls
Frequently asked questions
How big is the Javan Owlet?
The Javan Owlet is a large bird that weighs around 198 g.
Where does the Javan Owlet live?
The Javan Owlet is found across South & Southeast Asia with a range covering OR Java and Bali, where it is typically found in wooded and forested habitats.
What family does the Javan Owlet belong to?
The Javan Owlet (Glaucidium castanopterum) belongs to the Strigidae family, in the order Strigiformes.
What does the Javan Owlet eat?
The Javan Owlet is a invertivore — it feeds mainly on invertebrates such as insects and other small prey.
Does the Javan Owlet migrate?
The Javan Owlet is largely sedentary, staying within its range year-round rather than making regular long-distance migrations.
Is the Javan Owlet endangered?
The IUCN Red List currently assesses it as Least Concern That category covers species that remain widespread and reasonably abundant in the wild.
What sound does the Javan Owlet make?
1 real field recording of the Javan Owlet — including its song — can be played in the Songs & calls section on this page, credited to the recordist who captured it.
How large is the Javan Owlet's range?
The Javan Owlet has a mapped global range of about 50,000 km².
Conservation
Every bird benefits from bird-safe windows, native plants, and keeping cats indoors. Small changes at home add up to real protection.
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Guides for this bird
Meet the Strigidae
A field guide to the Strigidae family — 236 species in the Birbs encyclopedia, with the best-known members to start with.