Sylvia (Locustella) Ochotensis
Udskoye, lower Uda River, Sea of Okhotsk.
Has been considered conspecific with either or both of L. certhiola and L. pleskei. Hybridizes with former in E Russia (in lower Amur area and N Sakhalin), where apparently maintains stable intergrade populations, but elsewhere in range it exhibits a constant and distinctive suite of plumage, voice and behavioural characters. Birds of Kamchatka and N Kurils sometimes separated as race subcerthiola#R, but here considered indistinguishable from birds elsewhere in range. Monotypic.
E Russia (coast of Sea of Okhotsk from Magadan S to mouth of R Amur, also Kamchatka), Sakhalin, Kuril Is and N Japan (N & E Hokkaido); non-breeding Philippines and N Borneo.
Food and feeding
Status and conservation
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