Brown Booby

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.


External Links:
Conservation Status: IUCN Red List Page
Photos: Oriental Bird Images
Sound Recordings: xeno-canto Link
Wikipedia Entry: Wikipedia Link

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.