Usambara eagle-owl
The Usambara eagle-owl , also called the East African nduk eagle-owl or Vosseier's eagle-owl , ( "Bubo vosseleri" ) is a taxon of owl in the family Strigidae . <ref name="/ Volume 12 / Issue 04 / June 1974 , pp 484-486"></ref> It is now regarded as a subspecies of Fraser's eagle-owl ( "Bubo poensis" ) . 
<triplet> Strigidae <subj> owl <obj> parent taxon