Scientific Name: Sula leucogaster
Malay Name: Angsa-Laut Biasa
Chinese Name: 褐鲣鸟
Range: Found from tropical and subtropical Indian, Pacific and Atlantic Oceans and wanders widely outside breeding seasons to Indian subcontinent and Southeast Asia
Taxonomy: Polytypic. Subspecies are: leucogaster, brewsteri, etesiaca, plotus.
Local Subspecies: plotus
Size: 73-83 cm
Identification: Adult has distinctive dark chocolate-brown plumage with contrasting white lower breast to vent and mostly white underwing-coverts. Female is slight larger than male. Juvenile has somewhat paler brown plumage and washed dusky-brownish lower breast.
Habitat: Open seas and sometimes coastal waters.
Behaviour/Ecology: More regularly sighted over shallow inshore waters than other Booby species.
Local Status: Very rare visitor
Conservation Status: Least Concern (BirdLife International 2018)
- Checklist Revision for June 2023 (Revisions)
BirdLife International. (2018). Sula leucogaster. The IUCN Red List of Threatened Species 2018. https://dx.doi.org/10.2305/IUCN.UK.2018-2.RLTS.T22696698A132590197.en. Accessed on 1 January 2023
Robson, C. (2014). Field guide to the birds of South-East Asia (Second Edition). Bloomsbury Publishing, London.
Bird Society of Singapore. (n.d.). Brown Booby. Retrieved on December 5, 2023 from https://singaporebirds.com/species/brown-booby.