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

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.

Similar looking species: Red-footed Booby

Local Status: Very rare non-breeding visitor

Conservation Status: Least Concern (IUCN 3.1)

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

Craig Robson (2011) A Field Guide to the Birds of South-East Asia