common quail vs partridge

common quail

noun
  • Coturnix coturnix, a bird in pheasant family. 

partridge

noun
  • Any bird of a number of genera in the family Phasianidae, notably in the genera Perdix and Alectoris. 

How often have the words common quail and partridge occurred in a corpus of books? (source: Google Ngram Viewer )