common kingfisher vs kingfisher

common kingfisher

noun
  • Alcedo atthis, a Eurasian and North African species of kingfisher. 

kingfisher

noun
  • common kingfisher (Alcedo atthis) 

  • Any of various birds of the suborder Alcedines (or the family Alcedinidae sensu lato), having a large head, short tail and brilliant colouration; they feed mostly on fish. 

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