robin vs rufous-tailed scrub robin

robin

noun
  • An American robin, Turdus migratorius. 

  • A trimming in front of a dress. 

  • A European robin, Erithacus rubecula. 

rufous-tailed scrub robin

noun
  • Cercotrichas galactotes, a species of bird. Also called rufous scrub robin, rufous bush robin, rufous warbler, rufous bush chat 

How often have the words robin and rufous-tailed scrub robin occurred in a corpus of books? (source: Google Ngram Viewer )