Where to see the Asian Openbill
Anastomus oscitans · bird · Ciconiidae
Asian Openbill (Anastomus oscitans) is recorded in 495 protected areas and wildlife sites across 11 countries in our database. The places with the strongest evidence are Kaziranga National Park (India), Kevladev National Park (India) and Pallikaranai Marsh (India).

Where is the best place to see the Asian Openbill?
Based on GBIF records and our guides, the best-documented places to see the Asian Openbill are Kaziranga National Park (India), Kevladev National Park (India) and Pallikaranai Marsh (India). Most sites are in India (337), Thailand (92) and Sri Lanka (22). It appears in 9 trip reports in our library.
Top 25 places for the Asian Openbill
| # | Place | Country | GBIF records | Years | Evidence |
|---|---|---|---|---|---|
| 1 | Kaziranga National Park | India | 3,634 | 1971–2026 | Recorded on GBIF |
| 2 | Kevladev National Park | India | 3,058 | 1970–2026 | Recorded on GBIF |
| 3 | Pallikaranai Marsh | India | 2,469 | 1982–2024 | Recorded on GBIF |
| 4 | Boeung Tonle Sap Protected Area | Cambodia | 1,659 | 1992–2026 | Recorded on GBIF |
| 5 | Chitwan National Park | Nepal | 1,654 | 1973–2026 | Recorded on GBIF |
| 6 | Hastinapur Sanctuary | India | 1,567 | 1991–2024 | Recorded on GBIF |
| 7 | Nal Sarovar Bird Sanctuary | India | 1,523 | 1994–2024 | Recorded on GBIF |
| 8 | Satpura National Park | India | 1,414 | 2011–2025 | Recorded on GBIF |
| 9 | Deepar Beel Wildlife Sanctuary | India | 1,322 | 2003–2026 | Recorded on GBIF |
| 10 | Bueng Boraphet Non-Hunting Area | Thailand | 1,255 | 1984–2024 | Recorded on GBIF |
| 11 | Manas Tiger Reserve | India | 1,116 | 2011–2024 | Recorded on GBIF |
| 12 | Manas National Park | India | 1,098 | 2011–2024 | Recorded on GBIF |
| 13 | Nandankanan Zoological Park | India | 1,066 | 2014–2024 | Recorded on GBIF |
| 14 | Ranthambore National Park | India | 846 | 1986–2025 | Recorded on GBIF |
| 15 | Greater Hesaraghatta Grassland Conservation Reserve | India | 696 | 2003–2025 | Recorded on GBIF |
| 16 | Thol Lake Bird Sanctuary | India | 692 | 2005–2024 | Recorded on GBIF |
| 17 | Sultanpur National Park | India | 672 | 1972–2024 | Recorded on GBIF |
| 18 | Sultanpur National Park ESZ | India | 672 | 1972–2024 | Recorded on GBIF |
| 19 | Kaeng Krachan National Park | Thailand | 670 | 2006–2024 | Recorded on GBIF |
| 20 | Pulicat Bird Sanctuary | India | 622 | 1993–2024 | Recorded on GBIF |
| 21 | Tadoba-Andhari Tiger Reserve | India | 592 | 1994–2024 | Recorded on GBIF |
| 22 | Koshi Tappu Wildlife Reserve | Nepal | 563 | 1983–2026 | Recorded on GBIF |
| 23 | Thattekad Bird Sanctuary | India | 530 | 2000–2024 | Recorded on GBIF |
| 24 | Nong Bong Khai Non-Hunting Area | Thailand | 519 | 1997–2026 | Recorded on GBIF |
| 25 | مدينة أيوتايا التاريخية | Thailand | 518 | 1982–2026 | Recorded on GBIF |
470 more places in the interactive map.
By country
India: 337, Thailand: 92, Sri Lanka: 22, Malaysia: 11, Bangladesh: 9, Nepal: 7, Vietnam: 6, Cambodia: 5, Singapore: 3, Laos: 2 and Myanmar: 1.
Seen on trips
The Asian Openbill is recorded in these trip reports:
- Sri Lanka Mammal Watching Trip Report, April 2025: Royle Safaris — Royle Safaris
- Vietnam Rare Primates Trip Report, April 2025: Royle Safaris — Royle Safaris
- Nepal Birding Trip Report, April 2019: Wise Birding Holidays — Wise Birding Holidays
- South India Mammal Watching Trip Report, April-May 2017: Royle Safaris — Royle Safaris
- Tadoba Tiger Mammal Watching Trip Report, June 2015: Royle Safaris — Royle Safaris
- Kanha, Kaziranga and Chitwan Mammal Watching Trip Report, January 2014: Royle Safaris — Royle Safaris
- Gujarat Mammal Watching Trip Report, December 2013: Royle Safaris — Royle Safaris
- Satpura, Bandhavgarh and Panna Mammal Watching Trip Report, January 2013: Royle Safaris — Royle Safaris
- Sri Lanka Mammal Watching Trip Report, March 2011: Royle Safaris — Royle Safaris
Tours that have recorded it
- Sri Lanka Wildlife Exploration Tour — Royle Safaris
- Vietnam's Rare Primate Tour — Royle Safaris
- Birding the Land of the Thunder Dragon (Bhutan) — Wise Birding Holidays
- Western Ghats Rare & Endemic Wildlife Tour — Royle Safaris
- Tadoba Tiger Safari — Royle Safaris
In our guides
Read the full species account in our Singapore guide, Sri Lanka guide, Malaysia guide, India guide.
Take it with you
Build a free printable field guide or e-book for any of these places, with photos and a checklist.
Make a field guide for Kaziranga National ParkPhoto: Mark Clarke, CC BY 4.0.
GBIF downloads: India, Cambodia, Nepal, Thailand, Sri Lanka, Singapore, Myanmar, Vietnam, Malaysia, Laos, Bangladesh.
Data last updated 2026-11-05. Species–place links come from GBIF occurrence downloads (GBIF.org) matched to protected-area boundaries from OpenStreetMap (© OpenStreetMap contributors, ODbL) and other open boundary sources, plus places listed by our own guides. Record counts are what has been reported to GBIF, not population sizes. Reptiles and amphibians are never shown at park level. How this database works · Data sources and limits.