Dauria = Transbaikalia (southern Siberia), Russia.
Until recently considered conspecific with C. cooki (which see); despite remarkable disjunction, overall differences are only of degree. Geographical variation slight; morphometric and genetic analyses#R indicate that races stegmanni, koreensis, kansuensis, interposita and swinhoei should be included in nominate, and plumage similarities among first four support this; swinhoei, however, retained here as colour of upperparts and underparts distinct, being extremely close to those of C. cooki. Other proposed races are tristis (Chita, in Transbaikalia), pallescens (R Amur, in extreme SE Russia) and jeholica (C Jehol, in NE China), all included in nominate. Three subspecies recognized.
Food and feeding
Status and conservation
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