Asian openbill
Anastomus oscitans (Boddaert, 1783)
The Asian openbill (Anastomus oscitans), also called the Asian openbill stork, is a bird of the family Ciconiidae in the order Ciconiiformes. The Asian openbill is a carnivore and an aquatic predator, and it is partially migratory, with a geographic range of 2,120,000 km².
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Quick facts about the Asian openbill
It is listed as Least Concern on the IUCN Red List, which is not a threatened category, and its lifespan is given as 18 years.
- Weight
- 1.59 kgsrc for Weight
- Length
- Not recorded
- Lifespan
- 18 yearssrc for Lifespan
- Diet
- Aquatic predatorsrc for Diet
- Main food
- Not recorded
- Habitat
- wetlandsrc for Habitat
- Young per litter or clutch
- 3 – 3.2src for Young per litter or clutch
- Lifestyle
- Terrestrialsrc for Lifestyle
- Migration
- Partialsrc for Migration
- Conservation status
- Least Concern (IUCN)src for Conservation status
- Countries on record
- Not recorded
Photos of the Asian openbill
Only freely licensed photos are shown. Each carries its creator and licence.
_in_Kolkata_I_IMG_0495.jpg){kind=link}
Where does the Asian openbill live?
Not recorded
What is the Asian openbill?
The Asian openbill or Asian openbill stork (Anastomus oscitans) is a large wading bird in the stork family Ciconiidae. This distinctive stork is found mainly in the Indian subcontinent and Southeast Asia. It is greyish or white with glossy black wings and tail. Adults have a gap between the arched upper mandible and recurved lower mandible which is thought to be an adaptation that aids in the handling of snails, their main prey. Young birds are born without this gap. Although resident within their range, they make long distance movements in response to weather and food availability.
From the Wikipedia article “Asian openbill” (en.wikipedia.org/w/index.php?title=Asian_openbill&oldid=1369050718), 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 Asian openbill endangered?
The Asian openbill 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 Asian openbill classified?
- kingdomAnimalia
- phylumChordata
- classAves
- orderCiconiiformes
- familyCiconiidae
- genusAnastomus
- SpeciesAnastomus oscitans (Boddaert, 1783)
Synonyms Ardea oscitans
Other names and names in other languages (57)
- Asian open-bill storkEnglish
- Asian open-bill storkEnglish
- Asian open-bill storkEnglish
- Asian openbill storkEnglish
- لقلق منفرج المنقار الآسيويArabic
- শামুকভঙাAssamese
- Азиатски цепкоклюн щъркелBulgarian
- শামুকখোলBangla
- Bec-obert AsiàticCatalan
- bec de tenalla asiàticCatalan
- zejozob asijskýCzech
- ciconia pig agored AsiaWelsh
- Asiatisk GabenæbDanish
- SilberklaffschnabelGerman
- azia fendobekuloEsperanto
- Picotenaza asiáticoSpanish
- valge-irvnokkEstonian
- aasianrakonokkaFinnish
- Bec-ouvert indienFrench
- פשוק-מקור אסייתיHebrew
- घोंघिलHindi
- otvorenokljuna rodaCroatian
- ázsiai tátogató gólyaHungarian
- Bangau NgangaIndonesian
- Anastomo asiaticoItalian
- スキハシコウJapanese
- シロスキハシコウJapanese
- ಬಾಯ್ಕಳಕ ಕೊಕ್ಕರೆKannada
- indinis kiaurasnapis gandrasLithuanian
- ചേരാക്കൊക്കൻMalayalam
- मुग्धबलाकMarathi
- घुँगीफोर गरुडNepali
- Indische GaperDutch
- asiagapenebbNorwegian
- ଗେଣ୍ଡାଳିଆOdia
- kleszczak azjatyckiPolish
- bico-aberto-brancoPortuguese
- bico-aberto-indianoPortuguese
- cegonha-de-bico-aberto-asiáticaPortuguese
- ГонгалRussian
- Индийский аист-разиняRussian
- škározobec driemavýSlovak
- indijski špranjekljunSlovenian
- азијски опенбилSerbian
- Azijska šupljokljuna rodaSerbian
- Asiatisk gapnäbbstorkSwedish
- asiatisk gapnäbbsstorkSwedish
- ꠢꠣꠝꠥꠇꠜꠣꠋꠞꠣsyl
- அகலவாயன்Tamil
- நத்தை குத்தி நாரைTamil
- நத்தை குத்தி நாரை/அகலவாயன்Tamil
- นกปากห่างThai
- Ak AçıkgagaTurkish
- Asya Aralık Gagalı LeylekgiliTurkish
- лелека-молюскоїд індійськийUkrainian
- 鉗嘴鸛Chinese
- 钳嘴鹳Chinese
Catalogue of LifeWikipediaiNaturalistWikidataWoRMSIUCN Red List
Relatives of the Asian openbill
Other species in the same genus Anastomus.
African openbill
Anastomus lamelligerus
Common questions
Each answer is written from the sourced facts on this page, and only where they hold the answer.
What kind of animal is the Asian openbill?
The Asian openbill is a bird of the family Ciconiidae, in the order Ciconiiformes and genus Anastomus.
How heavy is the Asian openbill?
The Asian openbill has an adult body mass of 1.59 kg, which places it in the medium size class.
What does the Asian openbill eat?
The Asian openbill is a carnivore classed as an aquatic predator.
Is the Asian openbill endangered?
No. The Asian openbill is listed as Least Concern on the IUCN Red List, which is not a threatened category.
How long does the Asian openbill live?
The lifespan of the Asian openbill is given as 18 years.
How many eggs does the Asian openbill lay?
The Asian openbill has 3 eggs per clutch.
Who named the Asian openbill?
The Asian openbill, Anastomus oscitans, was named by (Boddaert, 1783).
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). Asian openbill (Anastomus oscitans). Retrieved from https://creaturedata.com/animals/asian-openbill
“Asian openbill (Anastomus oscitans).” CreatureData, 2026, https://creaturedata.com/animals/asian-openbill.
@misc{asian_openbill_2026,
title = {Asian openbill (Anastomus oscitans)},
author = {{CreatureData}},
year = {2026},
url = {https://creaturedata.com/animals/asian-openbill},
note = {Data as of 2026-11-11}
}