Asian Openbill

This species is defined as a rarity. Please submit your records of this species via our record submission page.

Scientific Name: Anastomus oscitans
Malay Name: Upih-Siput Asia
Chinese Name: 钳嘴鹳

Found from the Indian subcontinent to mainland Southeast Asia


Size: 68-81 cm

Adult has diagnostic dull yellowish-grey bill with open spaces between mandibles and long pinkish-grey legs. Body is mostly greyish-white with contrasting glossy black flight feathers and tail. Juvenile likes adult but body more brownish grey and bill has no spaces between mandibles.

Habitat: Freshwater marshes, flooded fields and padi fields.

Behaviour/Ecology: A small flock of 6 adults were observed feeding on Golden Apple Snails (an introduced species) at a flooded field along West Camp Road.

Local Status: Very rare non-breeding visitor

Conservation Status: Least Concern (BirdLife International 2016)

Past accepted records in our database:

Past records, bar chart (see more bar charts):


External Links:
Conservation Status: IUCN Red List Page
Photos: Oriental Bird Images
Sound Recordings: xeno-canto Link
Wikipedia Entry: Wikipedia Link
eBird Species page: eBird (Asian Openbill)

BirdLife International. (2016). Anastomus oscitans. The IUCN Red List of Threatened Species 2016. Accessed on 19 December 2021

Robson, C. (2014). Field guide to the birds of South-East Asia (Second Edition). Bloomsbury Publishing, London.