Scientific Name: Sula leucogaster
Malay Name: Angsa-Laut Biasa
Chinese Name: 褐鲣鸟
Found from tropical and subtropical Indian, Pacific and Atlantic Oceans and wanders widely outside breeding seasons to Indian subcontinent and Southeast Asia
Polytypic. Subspecies are: leucogaster, brewsteri, etesiaca, plotus.
Local Subspecies: plotus
Size: 73-83 cm
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.
Similar looking species: Red-footed Booby
Habitat: Open seas and sometimes coastal waters.
Behaviour/Ecology: More regularly sighted over shallow inshore waters than other Booby species.
Local Status: Very rare non-breeding visitor
Conservation Status: Least Concern (BirdLife International 2018)
Location: Most recent sighing was a subadult bird at the Straits of Johor (off Sungei Buloh Platform 1) on 21 March which stayed till 17 April 2016.
BirdLife International. (2018). Sula leucogaster. The IUCN Red List of Threatened Species 2018. Downloaded on 2 September 2021
Robson, C. (2008). A Field Guide to the Birds of South-East Asia. New Holland Publishers.