Silesia and Austria.…Hungary.
Formerly treated as conspecific with T. eunomus; taxonomic separation based on very different phenotypic characters, and hybridization evidently rare. Further study desirable. Monotypic.
SC Siberia (middle R Yenisey E to middle and upper Lena basin); S boundary uncertain, perhaps discontinuous E of L Baikal, but in W embracing Angara basin and S L Baikal; small groups reported to breed N of main range, near Lena and Olenek deltas. Non-breeding from extreme SE Russia (Vladivostok area), N Korea and E China S to Yangtze basin and Taiwan; scarce in Japan.
Food and feeding
Status and conservation
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