Brown Booby

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

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.

Similar looking species: Red-footed Booby, Masked 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 visitor

Conservation Status: Least Concern (BirdLife International 2018)

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Past records in our database:

Showing only accepted records. Note that records currently under review are also not displayed, and the list may not be a full list of records of this species in Singapore. For more details, check the database here.


BirdLife International. (2018). Sula leucogaster. The IUCN Red List of Threatened Species 2018. Accessed on 1 January 2023

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

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