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.
- Pelagic Bird Trip at the Singapore Strait – 20 September 2020 (Trip Reports)
- Pelagic Bird Survey at the Singapore Strait – 5 May 2018 (Trip Reports)
- Pelagic Bird Survey at the Singapore Strait – 15 October 2016 (Trip Reports)
- Migrant bar charts – Aug 28 update (Blog)
Featured reports: Sep 2022
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.