golden plover vs northern lapwing

golden plover

noun
  • A migratory plover of the genus Pluvialis, having black underparts and a golden back in the breeding season, now regarded as the three species P. apricaria of Europe, P. fulva of the Pacific coasts, and P. dominica of North America. 

northern lapwing

noun
  • A crested plover, Vanellus vanellus. 

How often have the words golden plover and northern lapwing occurred in a corpus of books? (source: Google Ngram Viewer )