no locality = Denmark.
Formerly placed, together with B. regalis, in now obsolete genus Triorchis or Archibuteo. Has hybridized with B. buteo in Norway#R and Finland#R. Variation clinal in Palearctic, with broad zones of intergradation between races; menzbieri sometimes merged into kamtschatkensis. Four subspecies normally recognized.
Food and feeding
Status and conservation
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