doe vs moorhen

doe

noun
  • A female hare. 

  • A female squirrel. 

  • A female kangaroo. 

  • A female deer; also used of similar animals such as antelope, (less commonly goat as nanny is also used). 

  • A female rabbit. 

adv
  • though 

moorhen

noun
  • A female red grouse, Lagopus lagopus scotica. 

  • Any of various medium-sized water birds of the genus Gallinula, of the rail family, that feed in open water margins. 

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