Photo: Charles J. Sharp / CC BY-SA 4.0 (Wikimedia Commons)
Asian Openbill
Anastomus oscitans
Asian Openbill (Anastomus oscitans) — Storks of South & Southeast Asia.
Found across 5 guides in our atlas — open any for the full checklist, photos and what's around right now.
The Asian Openbill (Anastomus oscitans) is a member of the Ciconiidae family found in South & Southeast Asia. Adults weigh 1.6 kg. 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 Ciconiiformes
- Family Ciconiidae Storks
- Genus Anastomus
- Species oscitans
Quick facts
- Weight
- 1.6 kg
- Diet
- Aquatic hunters
- Family
- Ciconiidae
- Order
- Ciconiiformes
- Habitat
- Wetland, lake & coast
How to identify
Similar birds
Endangered
Least Concern
Near Threatened
Least Concern
Biology & behaviour
Diet
The Asian Openbill hunts aquatic prey such as fish and aquatic invertebrates.
Behaviour
A bird of wetlands, it forages mainly on the ground.
Migration
The Asian Openbill is partially migratory: some populations move with the seasons while others stay resident year-round.
The Asian Openbill (Anastomus oscitans) belongs to the Ciconiidae family of the order Ciconiiformes. Its range spans South & Southeast Asia. Its distribution covers OR India and se Asia.
It is a very large bird. Adults weighs around 1.6 kg, with a wing length of about 39.7 cm and a tail of around 16.2 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 2.1 million km².
Songs & calls
Frequently asked questions
How big is the Asian Openbill?
The Asian Openbill is a very large bird that weighs around 1.6 kg.
Where does the Asian Openbill live?
The Asian Openbill is found across South & Southeast Asia with a range covering OR India and se Asia, where it is associated with wetlands, lakes and other open water.
What family does the Asian Openbill belong to?
The Asian Openbill (Anastomus oscitans) belongs to the Ciconiidae family, in the order Ciconiiformes.
What does the Asian Openbill eat?
The Asian Openbill hunts aquatic prey such as fish and aquatic invertebrates.
Does the Asian Openbill migrate?
The Asian Openbill is partially migratory: some populations move with the seasons while others stay resident year-round.
Is the Asian Openbill 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 Asian Openbill make?
1 real field recording of the Asian Openbill can be played in the Songs & calls section on this page, credited to the recordist who captured it.
How large is the Asian Openbill's range?
The Asian Openbill has a mapped global range of about 2.1 million 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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