Family Northern Storm-petrels (Hydrobatidae)

Near Threatened

Swinhoe's Storm-petrel (Hydrobates monorhis)


French: Océanite de Swinhoe German: Swinhoewellenläufer Spanish: Paíño de Swinhoe

Thalassidroma monorhis


, 1867,

near Amoy, China


Perhaps separable in genus Cymochorea, along with H. leucorhous, H. tristrami and H. markhami#R#R. Sometimes considered a race of H. leucorhous; the two may be closely related to H. homochroa. Monotypic.


Tropical Indian and W Pacific Oceans: breeds from Japan (islets off Kyushu and Honshu) W to Yellow Sea off China and Korea, and N to extreme SE Russia. Recent records suggest possible breeding in N Atlantic.

Descriptive notes

18–22 cm; 25·6–53·5 g; wingspan 44–50 cm. Medium-sized dark brownish storm-petrel with notched tail, small head, and some white shafts at... read more


Two main vocalizations, a purring call given from within burrow (and presumably also ground), which... read more


Marine and normally pelagic, but also occurs in coastal waters. Breeds on small offshore islands,... read more

Food and feeding

No information available on diet. Feeds mainly on wing by dipping; does not patter. In Maldives, has been observed scavenging in company of... read more


Very poorly known. Starts Apr, with egg-laying in May–Jun, sometimes as late as early Jul. Forms loose colonies; nests in burrows.... read more


Migrates S & W to winter in N Indian Ocean (W to off Somalia) and Arabian Sea; irregular in Red... read more

Status and conservation

Not globally threatened. Currently considerd Near Threatened. Much work required to determine population sizes and trends, main threats and conservation requirements. ... read more

Recommended citation

Carboneras, C., Jutglar, F., de Juana, E. & Kirwan, G.M. (2020). Swinhoe's Storm-petrel (Hydrobates monorhis). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from on 9 April 2020).