figpecker vs western Orphean warbler

figpecker

noun
  • A bird, the western Orphean warbler, Sylvia hortensis, prized by gourmets. 

western Orphean warbler

noun
  • Sylvia hortensis, an Old World warbler. Now sometimes Curruca hortensis. 

How often have the words figpecker and western Orphean warbler occurred in a corpus of books? (source: Google Ngram Viewer )