supplement
subspeciesBubo bubo ruthenus
(Zhitlov et Buturlin, 1906)
Bubo bubo sibiricus
(Gloger, 1833)
Bubo bubo yenisseensis
(Buturlin, 1911)
Bubo bubo turcomanus
(Eversmann, 1835)
Bubo bubo omissus
(Dementiev, 1933)
Bubo bubo hemachalanus
(Hume, 1873)
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