barred owl vs scops owl

barred owl

noun
  • A large American owl (Strix varia) with dark brown transverse bars on the breast. 

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 barred owl and scops owl occurred in a corpus of books? (source: Google Ngram Viewer )