Species fact sheet by Global Register of Migratory Species - www.groms.de

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Chief overwintering areas outside breeding range are in S Primorski region, Kuril Is and Sakhalin; many birds overwinter on Hokkaido, particularly on E coast. However, estimated that major part of Kachatkan sub- population does not leave peninsula, but merely moves to S parts of it. A young bird tracked by satellite remained in nest area in Kamchatka for nearly 2 months after fledging, up to mid-Oct; within 3 weeks it migrated 1360 km S through Kuril Is to Urup, NE of Hokkaido.   (del Hoyo J, Elliott A, Sargatal J (eds), 1994)

• digitised by GROMS, after del Hoyo J A Elliott; J Sargatal (eds) (1994) - www.hbw.com,
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