barn owl vs scops owl

barn owl

noun
  • An owl of the species Tyto alba, often having a white face and commonly found in barns and other farm buildings. 

scops owl

noun
  • Any owl of the Old World genus Otus. 

  • A small European migratory owl, Otus scops, that winters in sub-Saharran Africa. 

How often have the words barn owl and scops owl occurred in a corpus of books? (source: Google Ngram Viewer )