Asian Openbill Stork
Asian Openbill StorkAsian Openbill StorkAsian Openbill StorkAsian Openbill Stork

Asian Openbill Stork

Anastomus oscitans

Least ConcernNear ThreatenedVulnerableEndangeredCritically Endangered
Daily sighting probability Insufficient data
at Taman Negara National Park
1 Verified sightings at Taman Negara National Park From 2019 to 2026
7,654 Verified sightings across all 29 parks From 2019 to 2026
🌅 Crepuscular When it's spotted at dawn and dusk

About the Asian Openbill Stork

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.

The Asian openbill was described by the French polymath Georges-Louis Leclerc, Comte de Buffon in 1780 in his Histoire Naturelle des Oiseaux from a specimen collected in Pondichery, India. The bird was also illustrated in a hand-coloured plate engraved by François-Nicolas Martinet in the Planches Enluminées D'Histoire Naturelle which was produced under the supervision of Edme-Louis Daubenton to accompany Buffon's text. Neither the plate caption nor Buffon's description included a scientific name but in 1783 the Dutch naturalist Pieter Boddaert coined the binomial name Ardea oscitans in... Wikipedia →

Closest Relatives at Taman Negara National Park

Lesser Adjutant
NT

Lesser Adjutant

🌅 Crepuscular Bird

Leptoptilos javanicus

Daily sighting probability Insufficient data
Painted Stork
LC

Painted Stork

🌅 Crepuscular Bird

Mycteria leucocephala

Daily sighting probability Insufficient data

Global Distribution

Where this species is recorded worldwide. Restricted to human observations from 2019 onwards — the same kind of record and the same period the probabilities on this page are built from, so collar-tracking studies, camera-trap arrays and museum specimens are excluded. Around Santa Rosa that removes 5,924 GPS fixes from a handful of tagged jaguars.

where this species is recorded (GBIF density — it tracks where observers go, not how likely a sighting is)  ·  parks where it occurs — tap a pin for the sighting probability there

Parks Where Found

# Park Country Daily sighting probability
1 Kaziranga National Park 🇮🇳 India
~60%
2 Yala National Park 🇱🇰 Sri Lanka
~60%
3 Chitwan National Park 🇳🇵 Nepal
~50%
4 Bandipur National Park 🇮🇳 India
~40%
5 Minneriya National Park 🇱🇰 Sri Lanka
~40%
6 Wilpattu National Park 🇱🇰 Sri Lanka
~30%
7 Keoladeo National Park 🇮🇳 India
~30%
8 Ranthambore National Park 🇮🇳 India
~20%
9 Satpura National Park 🇮🇳 India
~20%
10 Manas National Park 🇮🇳 India
~20%
11 Royal Bardia National Park 🇳🇵 Nepal
~20%
12 Nagarhole National Park 🇮🇳 India
~20%
13 Sundarbans National Park 🇮🇳 India
~10%
14 Khao Yai National Park 🇹🇭 Thailand
~10%
15 Kaeng Krachan National Park 🇹🇭 Thailand
~10%
16 Periyar National Park 🇮🇳 India
<5%
17 Mudumalai National Park 🇮🇳 India
<5%
18 Kanha National Park 🇮🇳 India
<5%
19 Bandhavgarh National Park 🇮🇳 India
<5%
20 Royal Manas National Park 🇧🇹 Bhutan
<5%
21 Sinharaja Forest Reserve 🇱🇰 Sri Lanka
<5%
22 Doi Inthanon National Park 🇹🇭 Thailand
<5%
23 Jim Corbett National Park 🇮🇳 India
<5%
24 Gir National Park 🇮🇳 India
Insufficient data
25 Taman Negara National Park 🇲🇾 Malaysia
Insufficient data
26 Cat Tien National Park 🇻🇳 Vietnam
Insufficient data
27 Cuc Phuong National Park 🇻🇳 Vietnam
Insufficient data
28 Khao Luang National Park 🇹🇭 Thailand
Insufficient data
29 Khao Sok National Park 🇹🇭 Thailand
Insufficient data
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