Swinhoe’s Storm Petrel

Scientific Name: Hydrobates monorhis
Malay Name: Lelayang-Laut Kelam Asia
Chinese Name: 黑叉尾海燕

Breeds on the offshore islands of temperate Northeast Pacific from eastern China to Korea and Japan, passaging through the South China Sea to the Indian Ocean to winter.


Size: 20 cm

Small size, forked tail and overall sooty brown plumage with contrasting paler diagonal bar across upperwing-coverts.

Habitat: Open seas.

Behaviour/Ecology: Usually observed in small groups during migration, flying and gliding just above the water surface.

Local Status: Common passage migrant

Conservation Status: Near Threatened (BirdLife International 2018)

Location: Straits of Singapore.

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Migrant bar chart (see more bar charts):

BirdLife International. (2018). Hydrobates monorhis. The IUCN Red List of Threatened Species 2018. https://dx.doi.org/10.2305/IUCN.UK.2018-2.RLTS.T22698520A132651372.en. Accessed on 1 January 2023
Jeyarajasingam, A., & Pearson, A. (2012). A Field Guide to the Birds of Peninsular Malaysia and Singapore. Oxford University Press.
Robson, C. (2014). Field guide to the birds of South-East Asia (Second Edition). Bloomsbury Publishing, London.