brown falcon vs peregrine

brown falcon

noun
  • Falco berigora, a member of the falcon genus found in the drier regions of Australia. 

peregrine

noun
  • The peregrine falcon. 

adj
  • Wandering, travelling, migratory. 

  • Lacking essential debility. 

  • Not native to a region or country; foreign; alien. 

  • Extrinsic or from without; exotic. 

How often have the words brown falcon and peregrine occurred in a corpus of books? (source: Google Ngram Viewer )