ring-dove vs ringneck dove

ring-dove

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. 

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