rock dove vs rock pigeon

rock dove

noun

  • The dove/pigeon species Columba livia. 

rock pigeon

noun

  • The rock dove, Columba livia. 

  • The white-quilled rock pigeon, Petrophassa albipennis. 

  • The chestnut-quilled rock pigeon, Petrophassa rufipennis. 

  • The speckled pigeon, Columba guinea, or African rock pigeon. 

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