Masked Booby

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

Scientific Name: Sula dactylatra
Malay Name: Angsa-Laut Paruh Kuning
Chinese Name: 蓝脸鲣鸟

A pelagic species, breeding and wintering in tropical waters from 30 degrees north of the equator to 30 degrees south of the equator.

Polytypic. Subspecies are: dactylatra, melanops, tasmani, personata.

Local Subspecies: personata

Size: 74-86cm

All white Booby with yellow bill (dull yellow in females and immature birds) with black primaries and secondaries. Face blue-black. Immatures with brown upperparts and underwings, and a white collar. From Red-footed Booby of all ages by greyish-yellow feet instead of red. From immature Brown Booby by white collar.

Similar looking species: Red-footed Booby, Brown Booby

Habitat: Open seas and rarely coastal waters.

Behaviour/Ecology: Strong flyer that prefers to hunt in areas of deep sea; generally not seen from the coast except when breding.

Local Status: Very rare non-breeding visitor

Conservation Status: Least Concern (BirdLife International 2018)

Featured articles:

Past accepted records in our database:

Migrant bar chart (see more bar charts):

BirdLife International. (2018). Sula dactylatra. The IUCN Red List of Threatened Species 2018. Accessed on 1 January 2023
Eaton, J. A., van Balen, S., Brickle, N. W., & Rheindt, F. E. (2021). Birds of the Indonesian Archipelago: Greater Sundas and Wallacea (Second Edition). Lynx Edicions, Barcelona.