ringneck dove vs wood pigeon

ringneck dove

noun
  • A domesticated dove with unclear taxonomic classification, often treated as its own species as Streptopelia risoria. Other sources classify it as subspecies of either Eurasian collared dove, Streptopelia decaocto or African collared dove Streptopelia roseogrisea. 

wood pigeon

noun
  • Any of several related species of pigeon in the genus Columba. 

  • The common wood pigeon, an Old World species of pigeon, Columba palumbus. 

  • A very large (up to 650 grams) species of pigeon native to New Zealand, Hemiphaga novaeseelandiae. 

How often have the words ringneck dove and wood pigeon occurred in a corpus of books? (source: Google Ngram Viewer )